2025-05-09

The Shopping Game

  • No delay
    • List shows up right away
  • Long delay
    • 4s delay
  • Total-response
    • A surprise
    • “Store is closing!”
    • Can only check once

Hypotheses

  • Least time studying the list and use the least memory if there is no delay to check it
    • Less study time and memory use scores in the No-delay condition
  • Children might sample the list to “double-check” rather than use all of their memory (Sahakian et al., 2023)
    • Higher memory use scores in the Total-response condition

Analyses

  • Generalized Linear Mixed-Effect Models (Lo & Andrews, 2015)
    • Condition as a fixed effect
    • child (participant) as a random intercept
    • Linear mixed effects model if data is normally distributed

Study time

Memory Use

Total-Response

Taste of diagnostic issues + decisions

  • Memory use model fit poorly
    • Added a constant (+1) to get rid of negatives
    • Used a gamma distribution
    • It fit better!
  • Total-Respone model also fit less than ideal
    • Above solution ^ did not result in better fit
    • Kept original model

Results - Study Time

  • Study time was longest in the Long-delay condition,
    • and it was significantly longer than study time in the No-delay condition
    • (X2 = 8.54, p = 0.003)

Results - Memory Use

  • Memory Usage was larger in the Long-delay than Memory Usage in No-delay
    • (X2 = 3.92, p = 0.048)

Results - Total-Response

  • Memory Usage in the Total-response conditions was larger than Memory Usage in the Free-response conditions,
    • but this was non-significant
    • (X2 = 0.87, p = 0.35).

See the full project!

  • Scan the QR code to see all the output and diagnostics etc!