Brinley analysis of accuracy reveals two distinct functions differing in intercept for storage-only versus storage-plus-processing tasks, corroborating a disproportionate processing cost¶

Claim · All claims
Evidence · 1 study · quant-synthesis r2 · q2
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Model comparison favored a Brinley model with separate task intercepts over a single-function model, with an intercept difference of 0.125 between storage-only and storage+processing tasks. → Jaroslawska 2019

Evidence¶

Jaroslawska 2019¶

Jaroslawska, A. J., & Rhodes, S. (2019). Adult Age Differences in the Effects of Processing on Storage in Working Memory: A Meta-Analysis. Psychology & Aging. https://doi.org/10.1037/pag0000358

q2 · i? · quant-synthesis · r2

Bayesian hierarchical Brinley analysis (brms/Stan) of logit-transformed accuracy from 34 references, with study-level effects and error in both axes. WAIC comparison favored Model 2 over Models 1 and 3; the task coefficient differed from zero in Models 2 and 3.

"Using the estimate from Model 2, the difference between the two intercepts is 0.125 [0.063, 0.184], indicating that there are two distinct Brinley functions differing in intercept for measures of storage only"

Discussion¶

Related Claims¶

• Age differences in memory accuracy are smaller for verbal than nonverbal storage tasks, and domain overlap between storage and processing tasks moderates dual-task age differences
• A shared attentional resource for storage and processing is the best supported resource theory of WM capacity but faces empirical challenges
• Older adults show a small but disproportionate age-related cost of concurrent processing on storage accuracy in working memory dual tasks — related
• Titration of storage task difficulty substantially reduces age differences in both single-task and dual-task memory accuracy — related