Reading focus
Syllabus: How Stable Is Personality?
Map the one-month waitlist comparison, the three-month intervention, and later follow-up onto the claims each can support.
Why you’re reading it. Apply the earlier distinctions to a concrete attempt at desired change, including agreement across raters and the limits of persistence evidence.
A question to consider. Alex’s self-rating improves after using a programme, but colleagues notice no change. How would you weigh those reports, and what additional observation would most strengthen the interpretation?
Why this reading
This trial investigates whether a structured digital intervention can help people move toward their own personality-change goals. Its design makes the timing of the control comparison, agreement between self- and observer-reports, and persistence after the intervention central to interpretation.
Before you read
Participants chose a trait-change goal; randomization determined when the intervention began. The waitlist lasted one month, after which that group also received the intervention. Distinguish this randomized comparison from later changes observed during the three-month programme and follow-up. Observer reports offer another perspective but are not infallible measurements.
Read for
- Identify which observations have an untreated randomized comparison and which describe change after both groups have begun intervention.
- Compare desired increases and decreases, self-reports and observer reports, and immediate and follow-up outcomes.
- Ask how self-selection, expectations, attrition, and a programme with several components limit generalization and explanation.
Consider afterwards
- A programme reports desired self-rated changes three months after it ends. What additional evidence would distinguish a lasting change in behavior from altered self-description or selective follow-up participation?
Editorial context
Observer evidence was more limited than the self-report findings, particularly for desired decreases. The original follow-up lasted three months after the programme; it did not demonstrate permanent change. A one-year follow-up reported maintenance, but only about one tenth of the original participants completed that assessment and there was no continuing untreated control. The 2024 review of intentional change supports continued investigation while emphasizing limitations in samples, follow-up, and the number of controlled interventions. This study is evidence to appraise, not a recommendation for a particular app or a promise of personal benefit.