Evidence for Scripting #

Every substantive claim on the Scripting page is checked against current research. Here is each claim, how well today’s evidence supports it, and the sources. The full, de-duplicated source list lives on the references page.

Supported · strong evidence — Mentally rehearsing a performance (mental practice) genuinely improves how well you perform it.

Driskell, Copper & Moran’s (1994) meta-analysis found a significant positive overall effect of mental practice on performance; later meta-analyses and reviews continue to support a real-but-moderate benefit.

Sources: Driskell, J. E., Copper, C., & Moran, A. (1994), Does mental practice enhance performance? Journal of Applied Psychology — https://doi.org/10.1037/0021-9010.79.4.481 · full reference ›

Supported · moderate evidence — Mental rehearsal works best for tasks with a strong cognitive or verbal component.

Driskell, Copper & Moran (1994) reported that mental practice effects were larger for tasks with a greater cognitive component than for purely physical/motor tasks.

Sources: Driskell, J. E., Copper, C., & Moran, A. (1994), Does mental practice enhance performance? Journal of Applied Psychology — https://doi.org/10.1037/0021-9010.79.4.481 · full reference ›

Supported · moderate evidence — Mental practice supplements rather than replaces physical practice, and its benefit tends to fade over time without real practice.

Driskell, Copper & Moran (1994) found physical practice generally outperforms mental practice and that the effect of mental practice decreases as the retention interval lengthens, implying it works best combined with and refreshed by real practice.

Sources: Driskell, J. E., Copper, C., & Moran, A. (1994), Does mental practice enhance performance? Journal of Applied Psychology — https://doi.org/10.1037/0021-9010.79.4.481 · full reference ›

Supported · strong evidence — Forming an ‘if-then’ plan that specifies when, where, and how you will act (an implementation intention) reliably increases follow-through on a goal.

Gollwitzer & Sheeran’s (2006) meta-analysis of 94 studies found implementation intentions had a medium-to-large positive effect (d ≈ 0.65) on goal attainment over and above mere goal intentions.

Sources: Gollwitzer, P. M., & Sheeran, P. (2006), Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology — https://doi.org/10.1016/S0065-2601(06)38002-1 · full reference ›

Supported · moderate evidence — Specifying a concrete situational cue and linking it to a planned response helps you act on the cue automatically rather than having to deliberate in the moment.

Gollwitzer & Sheeran (2006) describe the process by which if-then plans heighten accessibility of the cue and create a relatively automatic cue-response link, reducing reliance on conscious deliberation at the critical moment.

Supported · moderate evidence — Merely writing down a desired outcome does not by itself cause the outcome; the benefit comes from rehearsal and concrete planning, not from the wish.

The evidence base attributes goal benefits to implementation intentions and mental practice (action-focused planning and rehearsal), not to outcome statements alone; Gollwitzer & Sheeran (2006) show goal intentions are markedly less effective than goal intentions plus if-then implementation plans.