Power Analysis
3 posts tagged with “Power Analysis”
What a review of 162 experience-sampling studies shows about current practice
A systematic review published in Advances in Methods and Practices in Psychological Science extracted methodological detail from 162 experience-sampling studies published in a single year. The picture it produces is one of wide variation in design choices and uneven reporting, with sample-size justification and missing-data handling the weakest points. Here is what the numbers say and what they imply for a protocol being written now.
August 24, 2026
Prompt frequency, questionnaire length, and study duration: the design trade-offs that shape ESM data quality
Three upstream design choices determine how much burden an ESM participant carries and how much usable data a study produces: how many prompts arrive per day, how many items each prompt asks, and how many days the protocol runs. This post reviews what the evidence says each choice costs and buys — including the experimental finding that questionnaire length, not sampling frequency, is what degrades data quality — and covers the response window as a fourth, separate decision.
August 17, 2026
Power analysis for intensive longitudinal designs
Why standard G*Power calculations underpower ESM studies, and how to think about effective sample size when each participant contributes many observations.
July 13, 2026