Behavior activation interventions show a dose-response pattern — completing more conscientiousness challenges produced larger increases — but one behavior activation trial found no significant change¶

Claim · All claims
Evidence · 1 study (2 entries) · review r2–r3 · q2
Currency · newest study 2025 · checked against its sources 2026-10-20 (automated, 2 of 2 entries) · not reviewed by a person

Subclaims¶

q2 i? Completing more behavioral challenges prototypical of high conscientiousness produced larger increases in conscientiousness, while setting goals without completing challenges did not increase conscientiousness. → Melanie Turner 2025 q2 i? In one 16-week behavior activation trial, completing conscientiousness-consistent challenges did not lead to significant changes in conscientiousness. → Melanie Turner 2025 (2)

Evidence¶

Melanie Turner 2025¶

Melanie Turner, Flaviu A. Hodis. (2025). Strengthening Conscientiousness by Means of Interventions: A Systematic Review. Educational Psychology Review. https://doi.org/10.1007/s10648-025-10016-4

q2 · i? · review · r2

Systematic review of 11 conscientiousness interventions. Its Table 1 summarises one of the reviewed studies, Hudson et al. (2019), a longitudinal study of 337 American university students completing 15 weeks of online behavior activation challenges, as finding the dose-response pattern and the null effect of goal-setting without challenge completion.

"Completing more behavioral challenges prototypical of high conscientiousness produced larger increases in consci- entiousness. Setting goals to increase conscientiousness (without completing chal- lenges) did not increase conscientiousness."

Melanie Turner 2025 (2)¶

Melanie Turner, Flaviu A. Hodis. (2025). Strengthening Conscientiousness by Means of Interventions: A Systematic Review. Educational Psychology Review. https://doi.org/10.1007/s10648-025-10016-4

q2 · i? · review · r3

Systematic review of 11 conscientiousness interventions. It reports that one of the reviewed studies, Hudson (2023), a 16-week online behavior activation intervention with 467 American university students, "failed to produce any significant changes in trait conscientiousness"; a non-significant result, not a demonstrated absence of change.

"Completing behavioral challenges consistent with high levels of conscientiousness did not lead to significant changes in conscientiousness"

Discussion¶

Learner Variables¶

• Personality Traits — outcome: instruction changes it

Related Claims¶

• Digital coaching increased the organization and productiveness facets of conscientiousness but not responsibility, with no observer-reported facet changes — related
• Digital coaching significantly increased trait conscientiousness, with effects stable one year after the intervention ended — related
• One in-person coaching intervention produced a small significant reduction in conscientiousness while the control group showed no change — related
• Most recent interventions to strengthen conscientiousness significantly increased it at the trait, facet, or state level, with small-to-moderate effect sizes — a broader claim this one bears on
• In trait-change interventions, participants who completed more trait-relevant behavioural challenges showed greater trait change over 15 weeks — a broader claim this one bears on
• Personality traits change across the lifespan and in response to interventions, with the greatest change in adolescence and early adulthood — a broader claim this one bears on