Abstract
Negative future thinking pervades emotional disorders. This hybrid efficacy–effectiveness trial tested a four-session, scalable online cognitive-bias-modification program for training more positive episodic prediction. Nine hundred fifty-eight adults (73.3% female, 86.5% White, 83.4% from United States) were randomly assigned to positive conditions with ambiguous future scenarios that ended positively, 50/50 conditions that ended positively or negatively, or a control condition with neutral scenarios. As hypothesized (preregistration: https://osf.io/jrst6), positive-training participants improved more than control participants in negative expectancy bias (d = −0.58), positive expectancy bias (d = 0.80), and self-efficacy (d = 0.29). Positive training was also superior to 50/50 training for expectancy bias and optimism (d = 0.31). Training gains attenuated yet remained by 1-month follow-up. Unexpectedly, participants across conditions improved comparably in anxiety and depression symptoms and growth mindset. Targeting a transdiagnostic process with a scalable program may improve bias and outlook; however, further validation of outcome measures is required.
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