Construction and validation of the Basic Scale of Entrepreneurial Competencies for the Secondary Education level. A study conducted in Spain

Introduction The impact of entrepreneurship training on the levels of compulsory education has been weak until now. Complementarily to the demand of greater effectiveness in entrepreneurship education, it is a priority to make scientifically verified instruments available to provide useful information about the achievement of the competences needed for the development of entrepreneurial capacities. Our research is focused on the design and assessment of entrepreneurship competency, tackling one the dimension concerning business skills or competences. Specifically, the aim of the study consists in the development, validation and reliability of an instrument, intended for secondary education, created with the purpose of detecting the strictly indispensable entrepreneurial competencies in the basic training of the business profile, the Basic Scale of Entrepreneurial Competencies (BSEC). Methods The research was developed in three phases via qualitative and quantitative methods. In the development phase the items were generated and the dimensions and components of entrepreneurship competency were identified. Also, the content and face validity were carried out, where experts (n = 48) and students (n = 24) took part. In the recruitment phase a multi-stage sampling stratified by conglomerates was performed, obtaining a sample of 1440 students, aged between 11 and 17 years old (M = 14.6, SD = 1.597) and a composition by sex of 679 girls and 761 boys. Construct validity was evaluated in the assessment stage through factor analysis (EFA and CFA). Later, the reliability was studied via the Cronbach´s α coefficient and the stability and reproducibility over time with the test-restest technique. Finally, the convergent and divergent validity were evaluated through the average variance extracted (AVE), the composite reliability (CR) and the square root of the AVE. Results 44 items were developed in the phase of generating items. After carrying out the validity of the content, there were 14 items with acceptable values in the Content Validity Ratio (CVR.89) and in the Content Validity Index (CVI.92). During the validation of the scale, the results of the exploratory and confirmatory factor analysis confirmed a first-order trifactorial structure and a second-order factor. The scale’s stability was appropriate, having an ICC = .92. The convergent validity results with Composite Reliability (CR) scores > 0.7 and the Average Variance Extracted (AVE) >. 0.50, along with the square root values of the AVE greater than the correlations between the other constructs show us important evidence of the validity of the Scale. The structure of the BSEC is made up of 13 items and three domains: Operations and Marketing Competencies (OMC), Competencies in Socio-Business and Legal Organization (CSBLO) and Economic-Financial Competencies (EFC). Conclusions The results of the research reflect its validity and reliability. This Scale has an evident usefulness for the training and assessment of entrepreneurship competence. Specifically, it is efficient for the valuation of entrepreneurial competencies in adolescent students in the stage prior to their incorporation into the work environment or their integration into the itineraries leading to higher education levels.


Introduction
The impact of entrepreneurship training on the levels of compulsory education has been weak until now. Complementarily to the demand of greater effectiveness in entrepreneurship education, it is a priority to make scientifically verified instruments available to provide useful information about the achievement of the competences needed for the development of entrepreneurial capacities. Our research is focused on the design and assessment of entrepreneurship competency, tackling one the dimension concerning business skills or competences. Specifically, the aim of the study consists in the development, validation and reliability of an instrument, intended for secondary education, created with the purpose of detecting the strictly indispensable entrepreneurial competencies in the basic training of the business profile, the Basic Scale of Entrepreneurial Competencies (BSEC).

Methods
The research was developed in three phases via qualitative and quantitative methods. In the development phase the items were generated and the dimensions and components of entrepreneurship competency were identified. Also, the content and face validity were carried out, where experts (n = 48) and students (n = 24) took part. In the recruitment phase a multi-stage sampling stratified by conglomerates was performed, obtaining a sample of 1440 students, aged between 11 and 17 years old (M = 14.6, SD = 1.597) and a composition by sex of 679 girls and 761 boys. Construct validity was evaluated in the assessment stage through factor analysis (EFA and CFA). Later, the reliability was studied via the Cronbach´s α coefficient and the stability and reproducibility over time with the test-restest technique. Finally, the convergent and divergent validity were evaluated through the average variance extracted (AVE), the composite reliability (CR) and the square root of the AVE.

Introduction
The new economy is directly linked to the relevance of knowledge. The improvement of quality of life is more related to learning than to the effectiveness of resource allocation, the traditional concern of economists. As Joseph E. Stiglitz and Bruce C. Greenwald [1] have expressed, resource allocation is a slow process if we compare it with the speed with which we can reduce knowledge gaps. Due to its association with innovation, entrepreneurship and economy, human capital has therefore become a focus of the utmost attention [2][3][4][5]. In fact, the challenges currently posed to the development of the economy require training to tackle the faceto-face global transformations in the business field, to compete in the business world and to remain open to continuous renovation in the face of constant demanding changes. This training requires specific knowledge, certain attitudes and concrete competences or precise behavior features. This can be seen in Order ECD/65/2015 [6], where entrepreneurial competence is defined as a feeling of initiative and entrepreneurial spirit, as a competence which favors the transformation of ideas into acts. This becomes specific in the capacity to select, plan and manage knowledge, skills and attitudes on one's own terms to attain a particular purpose. More concretely, and in relation with our study aim, this Order indicates that entrepreneurial competencies are related with the organization and functioning of firms through business planning, organization and management, without ignoring the ethical aspects of the business activity. In this way, entrepreneurial competencies would be defined within a global approach of the business competence and would be linked to certain business actions, such as management, organization, operations, marketing, financing or entrepreneurial strategy [7]. The new firm's ecosystem, made up of incubators, intermediaries, accelerators, assessors, etc., tends to recognize the difference between the two phases characterized by their particular activities: exploration and exploitation. This distinction highlights the need of knowledge prior to beginning business creation per se, trying to minimize the gap between learning and innovation [8][9][10]. Moreover, it is evident that entrepreneurs' competences greatly affect their decisionmaking, which also contributes to the business efficiency, as has been stressed by some recent studies [11][12][13].
There seems to be an international consensus concerning the relevance conceded to entrepreneurship as one of the main economic activities in the current context [14,15]. The business spirit fosters self-employment in the new generations, raises their level of employability and nurtures the fundamental social skills for professional development [16,17]. Hence, immersive proposals have been done based on real problems of firms with the aim of training in entrepreneurial competences [18,19]. In general, it appears to be deduced from the majority of studies performed that specific business education programs maintain a positive link with entrepreneurship, affecting the very choice of becoming an entrepreneur, as well as later business success [20][21][22].
Nonetheless, although the global consensus about the importance of entrepreneurial culture for economic and human development has for a long time been integrated into the political plans of the majority of countries, it can be considered that the influence of political guidelines on the need for training in entrepreneurship in compulsory education (Middle School and High School), in the basic stages of formal education, has until now been generally weak [23]. It is also true that education and training policies should reflect a greater theoretical and practical solidity, showing in the best way possible the nature and the development of business skills and offering a more consistent training panorama to the whole educational system [24]. This is particularly so in the compulsory education levels as a basic shaping of the entrepreneurial identity that entrepreneurs will later need [25,26]. This necessary political orientation especially includes the professionals of entrepreneurship education [27]. The considerable volume of research works carried out, although still insufficient in the basic levels of education [28], shall constitute a determinant material for a better demarcation of the school policies and practices linked to business education.
In this sense, as an indispensable supplement of the generalized demand for greater effectiveness in entrepreneurship education, it is fundamental to dispose of validated and operational instruments capable of providing useful information concerning the achievement of the competences needed for the development of entrepreneurship. Nevertheless, the adoption of diverse perspectives about business competence causes different problems concerning the valuation of the skills needed, giving rise to the convergence, at times confusing, of different factors of a social, political and economic character [29]. Though we could state that competence, in general, alludes to the virtue or status of being an entrepreneur, competency refers to some specific attribute possessed by someone within a set of related competences. Linked with the context, competences delimit an essential perspective of entrepreneurship education [30]. Consequently, research on the design and evaluation of entrepreneurial competency is an indispensable area for the efficient development of the training of entrepreneurs.
But, however, there are very few questionnaires which go thoroughly into this training dimension of entrepreneurship. Particularly, one notes a significant gap in the levels of compulsory education. The innovative behavior of employees has been explored through an evaluative scale of the intrapreneurial competences [31] (promotion of opportunities, proactiveness, flexibility, impetus and risk taking) with the idea of furthering the line of a robust model of intrapreneurial competences in the framework of firms, singularly in its role of a diagnosis test to enhance the development of workers in areas associated with the generation and innovation of enterprisess [31].
Likewise, within the theoretical perspective of professional construction, entrepreneurship has been analyzed as an adaptive vocational behavior driven by a person's capacity of self-regulation to prosper in the framework of their professional career. The Career Adapt-Abilities Scale (CAAS) has been validated in a sample of business students, showing evidence of its psychometric properties and offering elements for the comprehension of the successful adaptation in the context of business careers. It is positively associated with business intentions and with prior experience in family businesses [32].
There exists some psychometric research related to a specific element of the set of entrepreneurial competences. Thus, the recognition of business opportunities is one of the outstanding skills of entrepreneurs and, therefore, needs attention in business education. Starting out from existing models to measure the creativity and the recognition of opportunities, the questionnaire Perception of Opportunity Recognition Ability (PORA) has been created, showing an acceptable internal consistency [33].
In some countries representative of a great part of the global population, such as India, studies have been performed via the creation of questionnaires capable of diagnosing the common start-up problems and the success factors which contribute to the entrepreneurial process according to differences of sex [34], among adults interested in entrepreneurship and business development.
We observe that the assessment of entrepreneurship competency has a long track record and is mainly oriented toward adults in pre-business or business training contexts [35][36][37][38][39][40][41]. In this sense, a lack of assessment instruments related with entrepreneurship competency in the compulsory education stages has been detected. This research work proposes to study the validity and reliability of an instrument created with the aim of palliating the deficiency identified: the Basic Scale of Entrepreneurial Competencies (BSEC) intended for adolescents in the Secondary Education stage.

Materials and methods
This research is part of the project "Educating in Entrepreneurship: Evaluating Programs for the Training of Entrepreneurial Identity in Compulsory Education", financed within the State Plan of Excellence of the Government of Spain (Reference: EDU2013-42936-P). Among other results stemming from this R+D+i (Research, development and innovation) project, initial research has emerged concerning the study of the validity and the reliability of the Basic Business Knowledge Scale for secondary education students [42]. In parallel to this first study about business knowledge, and following the methodological orientations proposed in it, this second study has been developed concerning the psychometric properties of the Basic Scale of Entrepreneurial Competencies (BSEC).

Study design
We have carried out a transversal study with a design of mixed three-phase methods [43]: Phase 1) development and construction of the Basic Scale of Entrepreneurial Competencies (BSEC); phase 2) recruitment of the sample; and phase 3) assessment of the reliability and validation of the Scale (Table 1).
Phase 1: Development of the questionnaire. 1) Theoretical foundations and generation of items. To implement this sub-phase we have developed the PRISMA-P protocol [44] (S1 Checklist), although applying only 4 items corresponding to the sections of methods and results, as it is an educational bibliometric review [44,45], with the aim of generating the composition and dimensionality of the basic business competences, we carried out a systematic bibliometric review in January 2018 in the main databases (WOS, ERIC and Scopus), applying the following search strategy with the protocol: "Entrepreneur � competencies" OR "Entrepreneur � competency". The bibliographic search was limited to scientific articles from January 1st. 2000 to December 31st. 2017. Later, four university field experts with broad and acknowledged experience and scientific careers in business education valued the potential articles. The articles which had the following keywords either in their titles or their abstracts were selected: a) competency/ies; b) entrepreneurship education and entrepreneurial education or business education; c) compulsory education; d) Middle School and High School; and e) evaluation and assessment. The eligibility requirements were: a) Type of sample studied, including studies centered on the compulsory and post-compulsory stages of formal education; and b) typology of study, including theoretical, empirical and qualitative research works. As an exclusion criterion, we adopt that the article must be classified as "not relevant" (studies related to non-formal education) by at least two experts. Having selected the articles, they were submitted to a content analysis through an inductive coding [46]. Lastly, to find out the degree of agreement between the experts the Fleiss' kappa index was used [47], since it is valid to measure the agreement with three or more experts [48].
Later, between February 1st. and March 29th. 2018, two series of detailed interviews were done via a convenience sampling (S1 and S2 Files). On the one hand, there were 8 teachers, experts in business education in Compulsory Secondary Education centers, being selected two teachers per course of this stage. The choice of these experts was done through the criterion of Table 1. Construction process and chronological axis of the research design.

Sub-phases
Dates and participants

1) Theoretical foundations and generation of items
From January 7th. to March 29th. 2018 Bibliographic review in databases Experts (n = 4) Interviews of experts Expert teachers (n = 8) Interviews of students Students (n = 12)

Experts´judgment
Experts from university-educational centers (n = 16)

2) Content validity
From April 2nd. to April 30th. 2018 Assessment of experts about formal aspects of the items Experts (n = 10) Assessment of experts CVR and CVI Experts (n = 10) Exploratory factor analysis Sub-sample (n 1 = 720)

2) Reliability
From July 25th. to August 18th. 2018 Cronbach Alpha Test-retest time stability Sample (n = 50) participation as coordinators of business education programs during 3 academic courses. On the other hand, 12 students from Compulsory Secondary Education centers were interviewed with the criterion of having taken part in business education programs during the 2016-17 academic course. All the interviews lasted between 35 and 50 minutes and were analyzed via an analysis of their content with the NVivo 11 Plus software. The experts' judgment technique was applied to attain a high degree of validity of the scripts of the interviews, eight of them from the university area and another eight from educational centers [49,50]. All of them had a broad professional and academic experience in the area of entrepreneurship education. In order to attaining a high consensus among the experts and reducing the variability of their valuations, a criterion of surpassing 80% of concordance in the indications given by them in the two evaluation sessions was established.

3) External Validity
2) Content validity. Two sub-phases were performed. In the first one, 10 experts (two for each of the following areas: business education in compulsory education, firm organizational and legal management, marketing, economics and assessment of instruments) carried out an assessment related with the formal and written aspects of each of the 44 items developed by the research team. The items were revised with the criterion of at least one of the experts explicitly indicating the need for a revision. In the second, the Content Validity Ratio (CVR) and the Content Validity Index (CVI) were studied. To do so, another 10 specialists, two for each of the areas previously mentioned, analyzed, on the one hand, the CVR, evaluating each item with a 3-point Likert scale from non-essential to highly essential. Those items whose score was �.62 were kept in the instrument [51,52]. On the other hand, the CVI was calculated for each item [53,54] via a 4-point Likert scale from not relevant to highly relevant [55], those items which attained scores equal to or greater than.80 were selected. Later, the total CVR and CVI of the Scale were calculated.
3) Face validity. This sub-phase was developed through a focus group made up of 12 students chosen through a convenience sampling with similar age range characteristics to the studied sample. The selection criterion was to have participated during more than two academic courses in entrepreneurial education programs. The age of the students ranged from eleven to sixteen years old, the focus group being made up of two students per age. The duration of the focus group was 90 minutes and the Think-aloud protocols [55][56][57][58][59][60] were used as a comprehension technique to find out the ideas, suggestions and changes made by the students for each item. The focus group was guided, recorded, transcribed and analyzed with the NVivo 11 Plus program. The content analysis was done inductively via the following categories: formal problems and conceptual problems.
Phase 2: Recruitment and sample. 1) Recruitment. The sample design was a multi-stage sampling stratified by conglomerates. The study population were the education centers which had taken part in at least two editions of the entrepreneurial education program. The sample selection criteria are listed below: Criterion 1. Entrepreneurial education strategies: the Oslo Agenda [61] defines three strategies in entrepreneurial education: specific, general and isolated initiatives. Two autonomous communities were chosen with this criterion for each strategy: Andalusia and Galicia, with a specific strategy; Asturias and the Region of Murcia, with a general strategy; and Madrid and Catalonia with an isolated initiatives' strategy [62].
Criterion 2. The selection of education centers supported by public funds which were teaching YEE (Young European Enterprise) entrepreneurial education programs in Compulsory Secondary Education. Information was gathered from the databases of the UECOE (Spanish Union of Teaching Cooperatives) and of VALNALÓ N (a public firm under the authority of the Ministry of Employment, Industry and Tourism of the Government of Asturias). 16 centers fulfilled these two criteria.
Criterion 3. The YEE program should have been implemented during at least two editions. The 11 education centers of the six autonomous communities which fulfill this requirement were selected with this inclusion criterion. All the education centers accepted participating. The recruitment lasted from April 5th. to June 27th. 2018.
2) Characteristics of the sample. In Spain, during the academic year 2017/2018, the research was implemented in a population made up of 1,964,787 students of the ESO (Compulsory Secondary Education) stage (Ministry of Education and Professional Training). First, there were 1,473 students in the sample, but 33 questionnaires were eliminated in the data tabulation process due to the fact that many items were not answered. The sample is representative of the ESO stage (� = 3.4% y P = 99%).
( Table 2) describes the sample's characteristics. The composition of the final sample according to sex was 679 girls (47.2%) and 761 boys (52.8%), aged between eleven and seventeen years old (M = 14.6, SD = 1.597).
Phase 3: Assessment of the validity and reliability. 1) Descriptive analysis and discrimination indices. The descriptive analysis of the items was done with descriptive statistics, such as the mean (μ), standard deviation (σ), kurtosis (K) and asymmetry. The discrimination indices (corrected item-total correlation) were calculated for each item.
2) Construct validity. The construct validation of the BCES was implemented through two factorial analyses (a and b). The total sample (1440) was divided into two random samples, each made up of 720 participants. a) Exploratory Factor Analysis. An EFA was applied to the first half of the sample (720) [63]. The degree of suitability to factor analysis was done through Kaiser's KMO, along with Bartlett's Sphericity Test [64,65]. The OLS (Ordinary Least Squares) method was used in the estimation of the factors and, within this, the ULS (Unweighted Least Squares) method, being [66] the most recommendable method. Having estimated the factors and to achieve a high degree of simplicity and interpretability of the factorial solution obtained, rotation was applied with the direct Oblimin technique, given that we presuppose correlations between the latent variables or factors analyzed [67]. Lastly, the factors were selected with the Parallel Analysis (AP), taking into account criteria such as eigenvalues greater than one and variance explained [68]. Also, the items with saturations less than.40 were refined. b) Confirmatory Factor Analysis. With the second half of the sample, CFA was carried out for the purpose of checking the hypothesized model [69]. This analysis was done according to the following methodological process: 1) the ULS (Unweighted Least Squares) technique; 2) oblique rotation with the direct Oblimin criterion; and 3) the use of a set of absolute fit indicators (Standardized Root Mean Square Residual -SRMR, Goodness of Fit Index -GFI-and Root Mean Squared Error of Approximation -RMSEA) and an incremental (Tucker-Lewis Index TLI) and Comparative Fit Index -CFI-) to interpret the model extracted, as it has been studied that the χ2 statistic has a high sensitivity to the variations of the sample size [70][71][72][73]. The interpretation of the adjustment criteria is established according to the scores obtained in each indicator. First, scores equal to or greater than.96 and.95, respectively in the CFI, GFI and TLI, along with scores equal to or less than 0.5 in RMSEA, are considered a good fit. Second, scores equal to or greater than.90 in the CFI, GFI, TLI and scores below.08 in the RMSEA are estimated as an average fit. Third, scores in the CFI, GFI and TLI equal to or above.90 and the RMSEA with a score equal to or less than.10 are interpreted as a low fit. Fourth, the SRMSR with scores less than.08 are accepted as a suitable fit [70,73].

3) Reliability.
To evaluate the reliability, the internal consistency was analyzed with the Cronbach´s α coefficient of the three subscales and of the global instrument. The composite reliability (CR) was also evaluated, scores above.7 being interpreted as an appropriate internal consistency [65]. Later, the scale's reliability was studied to find out the stability and reproducibility over time with the test-retest technique. Thus, 50 subjects filled out the scales at two different measurement moments with fourteen days between both applications [74]. Scores above.75 were considered good in the interpretation of the Intraclass Correlation Coefficient (ICC) [75,76]. 4) External Validity. The validity of the scale has been carried out via the analysis of the convergent and discriminant validity. The convergent validity was evaluated by means of the Composite Reliability Index (CRI) and the Average Variance Extracted (AVE), which provide information about the amount of variance explained of the construct for each of its indicators; the reference values must be �.70 and �.50, respectively [77]. The Fornell and Larcker [77] method was used to find out the discriminant validity because of its sensitivity. Here it is proposed that the discriminant validity is established when the AVE is greater than the square root of the correlations between each factor and the rest of the latent variables. The FACTOR 10.4 [78]; EQS 6.2 [79]; Smart PLS 2.0 M3 [80] and the SPSS 23.0 [81] were used of the data analysis.

Procedure
The educational centers which had the possibility of choosing were informed about carrying out the research. Next, the directors and coordinators of the YEE who accepted to be part of the study gave their consent via a signed agreement. This study was implemented in the weekly hours corresponding to the tutorial hours of each course. In the participating educational centers, the directors informed the parents and the legal tutors, all families provided their written informed consent before starting this investigation. Once the participation of the educational centers was confirmed, the researchers agreed with the directors a specific date to visit the center and hand out the scale. The data collection in the educational centers was done between May 15th and July 15th 2018. The research team presented the fulfillment regulations and counseled the participants when they had doubts about filling out the scale. The aim of the investigation was explained to the students and anonymous participation in the data treatment was obtained. The tutors were present at all times. The scale was presented online [82] and was filled out in the computer classrooms in a 60-minute session.

Ethical declaration
This investigation was approved and reviewed, including ethical aspects, by committee of the Ministry of Economy and Competitiveness (Spain, EDU2013-42936-P).

1) Theoretical foundations and generation of items.
237 research works were identified in the bibliographic search. 8 articles were excluded due to duplications and 201 articles were eliminated, as they were studies related with non-formal education (an exclusion criterion). Hence, on the expert judgment 28 studies were evaluated (Fig 1).
The degree of agreement concerning the content analysis among the experts in the Fleiss' Kappa index [47] was K = .79, considered as acceptable [83,84]. Basing ourselves on the literature reviewed about the conceptualization, composition and evaluation of entrepreneurship competency, he progressive model of entrepreneurship education in the EU countries [85], and the levels defined in the "EntreComp Proggresion Model" of the European Framework for Entrepreneurial Competence [86], a conceptual base was created to do the qualitative study with detailed interviews to expert teachers (8) and students (12). The systematic review of the bibliography, along with the data extracted from the detailed interviews with both groups of participants, enabled the research team to, on the one hand, configure the Basic Scale of 2) Content validity. The data facilitated by the experts were compiled in the qualitative assessment of the formal and written aspects of the items. According to the review criterion, the choice of items to be revised by at least one expert, the writing of 17 items of the 44 items evaluated was modified. In the CVR, and basing ourselves on the criterion of Lawshe, 23 items which obtained scores lower than.62 were eliminated. In the CVI analysis 7 items were excluded as they did not reach values �.80. A total of 14 items were thus left. The CVR of the scale was.89 and the score of the CVI was.92, revealing that the Basic Scale of Entrepreneurial Competencies showed a high consistency in the content validity.
3) Face validity. No relevant change was introduced in this sub-phase, as in the application of formal and conceptual problems categories no item was observed that produced a serious difficulty of conceptual or formal comprehensibility. Generally speaking, the students of the focus group via Think-aloud protocols described that the items were legible and comprehensible. Table 3 shows the descriptive analyses and the discrimination indices of the items. The answers to the set of items show average scores of between 1.77 and 2.29, and standard deviations above one within a response range which goes from 1 to 3 [87]. The asymmetry and kurtosis indices show that the 14 items have values within the range ±1 [88]. The corrected item-total correlation attained scores >. 45, showing a good degree of homogeneity (Table 3).

1)Descriptive analyses and discrimination indices of the BCES.
2) Construct validity. Exploratory Factor Analysis (EFA). The sample appropriateness was previously checked, applying the EFA to sample 1 (720). The KMO value is 0.96 and the Bartlett Sphericity test is chi-squared = 9042.7; p <.0001, showing that the matrix is suitable for the analysis. The solution extracted from the EFA was made up of three factors, with a total of 13 items, item 7 (Operations and Marketing Competencies) being removed for having a factor loading below.40 (Table 4) (Table 5).
Confirmatory Factor Analysis (CFA). To contrast the structure of the model extracted from the EFA, a second-order CFA was applied to sample 2 (720). The factorial weights were significant (p <.001), and both the absolute fit indices (GFI = .96, TLI = .97, RMSEA = .045 and the SRMSR = .07) and the incremental fit indices (CFI = .97, TLI = .97) showed that the model resulting from the EFA has a reasonably good fit with the hypothesized model [88] (Fig 2).  3) Reliability. The Cronbach´s α coefficients of the three subscales have ranged between.79 and.90. The Cronbach´s α for the whole scale reached a value of.82. These results are interpreted as good [87]). These values, along with those found in the composite reliability coefficient (CR) and in the test-retest coefficient (ICC) for each of the subscales and for the total of the scale, show an appropriate reliability of the BCES scale [70,90]. Table 6 shows a synthesis of these coefficients. 4) External validity. The items have shown good factorial weights ranging between the lowest weight of.412 and the highest of.852. The results of the evaluation of the convergent validity via the AVE with scores >.63 and of the CR with scores >.87, respectively, show that the three subscales fulfill the criterion >.40, thus obtaining appropriate properties of convergent validity [91]. Using the Fornell-Larcker criterion concerning the variance extracted, all the data indicates that the scores of each factor are greater than the square root of the correlations with the rest of the latent variables. So, the data show evidence of discriminant validity [91] (Table 7).

Discussion
Effective entrepreneurial practices are globally considered a fundamental pillar for economic development and, likewise, these depend on an appropriate training of human capital [3,93]. However, it is often believed that students automatically learn and accumulate entrepreneurial competence as an inevitable result of the set of pedagogical influences received. It cannot be denied that the cultural impact on the complete training of people has a positive relation with entrepreneurial training, but the challenges posed in current societies require people who can tackle the global transformation which occurs in the business world and labor  [94]. The social need for entrepreneurial human capital training manifests itself strongly in the university and professional training levels and not so much in the basic teaching levels [95]. But the shaping of an entrepreneurial identity is a complex process which can be initiated from childhood and perhaps be a precursor of the sustainable entrepreneurial behaviors that systematically emerge in youth and adulthood [96]. Jayawama, Jones and Macpherson [97] have insisted on the idea of considering entrepreneurial human capital to be a consequence of a process of training developed from childhood. The relation between human capital and entrepreneurship involves, as numerous recent studies reveal [5], training in specific cognitive aspects and certain attitudes. The ethical and moral training of the entrepreneurial identity being of major relevance [98]. Attaining a high business development is not contradictory with ensuring an economic system that is sustainable and respectful with human dignity [99]. Ethical education in entrepreneurial education programs is essential for this goal. In this way, the basic levels of education acquire a notable relevance and the training of entrepreneurial competence also becomes a challenge for these first levels of the educational system and, maybe, particularly in secondary education, due to its propaedeutic character for higher studies and for its preparation for incorporation into the world of work. The accumulation of human capital is decisive for economic and social progress. Along with work experience and the influences of the family environment, the training which can be acquired in the school institution is fundamental. Among the aspects which make up the training of entrepreneurial human capital, acquired entrepreneurial competences, as well as the relevant attitudes and knowledge, are a determinant factor. The psychometric properties of the Basic Scale of Entrepreneurial Competencies for secondary education students are evaluated in this research. The European Union, in the framework of guidelines to their Member States for fostering the knowledge economy, points out the need to incorporate and develop business education in the lower levels of the educational system. Entrepreneurial competency is a training domain of entrepreneurship education, so attaining appropriate levels of development in entrepreneurial competency is one of the main aims of business education [100]. However, the assessment of entrepreneurial competency in adolescence or in earlier ages has been hardly studied. Specifically, the RediE study [62] and the Eurydice report [101] indicate the lack of rigorous assessment instruments related with business education in the compulsory education stages. In this sense, the Basic Scale of Entrepreneurial Competencies was developed to satisfy the need for an instrument which measures entrepreneurship competency in Secondary Education. This study has been implemented via mixed research procedures [102]. At the end of Phase 1 there were 14 items for the study of validity and reliability. In the EFA 1 item was eliminated because it had a factor loading less than.40 -(OMC 7) "To analyze and identify what the customers of the products/services value" -and 13 items with satisfactory factor loadings were kept. As a factor solution three factors were extracted from those 13 items. These items had satisfactory factor loadings in each corresponding factor. Firstly, a first-order factor structure made up of three factors was confirmed in the CFA and, later, a more parsimonious secondorder factor solution was attained by extracting a sole "Basic Entrepreneurial Competency". The absolute and incremental fit indices obtained appropriate scores, confirming the BSEC' structural model. In this way, the results obtained in the content, construct and reliability validity establish a mono-factor model of entrepreneurship competency in the Secondary Education stage made up of the Basic Entrepreneurial Competency factor and shaped by three dimensions: Operations and Marketing Competencies, Competencies in Socio-Business and Legal Organization and Economic-Financial Competencies. These dimensions are congruent with the foundations of the entrepreneurial competencies of other previous studies [103][104][105]. However, the proportionality of competences described in these frameworks of competence references is greater than that shown in our scale. This factorial composition is in agreement with the initial levels of training of entrepreneurial competence described in the "EntreComp Proggresion Model" of the European Framework for Entrepreneurial Competence [86], and with the basic business education of the educational stage studied [106].
The psychometric properties indicate that the Basic Scale of Entrepreneurial Competencies is consistent and robust, allowing the evaluation of the degree of entrepreneurial competencies in the students. Among other features, its use serves to evaluate and detect the students' training needs or find out the impact of business education programs on entrepreneurial competencies. This research on competencies, along with the previous research of basic business knowledge [42], enables an unprecedented research line in entrepreneurial education in this education stage. It is not only related with the construction of measurement scales which cover the existing gaps concerning reliable and valid scales, but also, especially, with building an evaluation model concerning the entrepreneurial qualification acquired by the students through the business knowledge and skills developed in entrepreneurial education programs. Specifically, in the future, it would consist of configuring, analyzing and evaluating a hypothetical model of entrepreneurial qualification with a tertiary hierarchical structure which combines knowledge and skills within the domain of entrepreneurial qualification. Ultimately, this approach would mean an original conceptual and metric framework concerning the implementation and evaluation of entrepreneurial education programs in which the BSEC and the BBKS [42]) would be additional configuration elements. All the data indicate that the Basic Scale of Entrepreneurial Competencies is consistent and robust, enabling assessing the degree of development of entrepreneurial competencies in students with a sole instrument. This instrument contributes to reducing the shortcomings of valid and reliable instruments concerning the assessment of business education in this educational stage. Among others, its use will serve to assess and detect students' training needs and to find out the effect of business education programs on entrepreneurial competencies [107]. The psychometric properties of the BSEC have been demonstrated, but this study also has some limitations: 1) it is the first time that the validation of the scale has been developed and it is not a universal instrument, more studies would be necessary in other school and age contexts, business education programs, types of schools and educational stages (Primary Education, High School Degree or Professional Training); 2) as the sex has not been analyzed in the study of the reliability and validity, research in this sense ought to be carried out; 3) nor have the socio-demographic and economic variables been studied and it will be necessary to introduce this type of variables in future researches.

Conclusion
The results of the study indicate that the Basic Scale of Entrepreneurial Competencies for Secondary Education has good psychometric properties. Centered on entrepreneurial competency, this Scale aims to offset the current lack of validated instruments in the basic levels of formal education (S3 and S4 Files). It is also useful for future researches related with the training of entrepreneurial competencies within the school system, as well as for the design and development of innovative entrepreneurial practices which mean to explore new forms of business education, including a fundamental range of business activities.