Table 1.
Descriptive analyses of each questionnaire’s sample.
Fig 1.
Demographic characteristics of participants.
Age distribution across the 20 questionnaires, each represented by a different line. The grey scale for each line represents the gender proportion in the specific sample of participants.
Table 2.
Descriptive statistics for the variables considered in this study.
Fig 2.
Distribution of valid data points.
Distribution of the final number of valid data points (243,824) across the 10 variables of interest.
Table 3.
Pearson’s correlations.
Table 4.
Correlation values for each variable resulting from the average split–half correlation for each questionnaire.
Fig 3.
Distribution Boxplots of the overall half-split reliability distributions over 1,000 random replicates, run separately for each questionnaire and for each variable.
Fig 4.
Distribution of the variables in the final dataset.
Table 5.
Descriptive statistics and t-test concerning the ratings provided by male and female responders.
Fig 5.
Hierarchical Clustering Analysis dendrogram.
Dendrogram resulting from the Hierarchical Clustering Analysis of the 16 variables.
Fig 6.
Partial correlations among all the variables.
The dot color indicates the direction of the correlation (blue for direct, red for inverse) and the size and transparency its strength.
Table 6.
Partial correlations among all the variables.
Fig 7.
Partial scatterplot of mean values in the Valence and Arousal dimensions, along with the quadratic regression line (R2 = .33).