Table 1.
Vignette Dimensions and Levels used in this study.
Figure 1.
Mean Willingness to Use a Substance for Enhancing Cognitive Performance.
Measured on a 10-point Likert-scale with anchors: 0: “under no circumstances”; 9: “in every case” (n = 1,742).
Figure 2.
Willingness to Use a Substance with Varying Characteristics and Under Differing Contextual Factors.
In each panel: Mean willingness to use a substance on a 10-point Likert-scale with anchors: 0: “under no circumstances”; 9: “in every case” and corresponding error bars. Panels A to C focus on the substance characteristics: (A) different types substances including an over-the-counter drug (OTC), pharmacy drug (PD), prescription drug (PRD), and illegal drug (ID); (B) varying severity of side effects (mild, moderate, severe); and (C) differing probabilities that side effects will occur (1 in 10.000, 1 in 100, 1 in 10). Panels D to F focus on varying contextual factors: (D) differing performance level relative to peers (low, average, high); (E) prevalence of use among peers (0%, 50%, 100%); and (F) presence or absence of policy and sanction (no policy, policy without sanctions, policy with sanction). (n = 1,742; refer to Table 1 for the full description of the vignette levels).
Table 2.
Negative binomial regression of willingness on vignette dimensions respondent's sex and age.
Figure 3.
Mean Moral Acceptability about Using a Substance for Enhancing Cognitive Performance.
Measured on a 10-point Likert-scale with anchors: 0: “totally unacceptable”; 9: “completely acceptable” (n = 1,743).
Figure 4.
Moral Acceptability of Using a Substance with Varying Characteristics and Differing Contextual Factors.
In each panel: Mean moral acceptability about the use of a substance on a 10-point Likert-scale with anchors: 0: “totally unacceptable”; 9: “completely acceptable” and corresponding error bars. Panels A to C focus on the substance characteristics: (A) different types substances including an over-the-counter drug (OTC), pharmacy drug (PD), prescription drug (PRD), and illegal drug (ID); (B) varying severity of side effects (mild, moderate, severe); and (C) differing probabilities that side effects will occur (1 in 10.000, 1 in 100, 1 in 10). Panels D to F focus on varying contextual factors: (D) differing performance level relative to peers (low, average, high); (E) prevalence of use among peers (0%, 50%, 100%); and (F) presence or absence of policy and sanction (no policy, policy without sanctions, policy with sanction). (n = 1,743; refer to Table 1 for the full description of the vignette levels).
Table 3.
Negative binomial regression of moral acceptability on vignette dimensions respondent's sex and age.