Some notes and speculations about various topics. ||| Gegenwärtig - vorübergehend -
wohl eher eine Gedankensammlung als ein Naturwissenschaftsblog. Das Konzept eines "Naturwissenschaftsblogs" wird erst im kommenden Jahr (2018/2019) Umsetzung finden.
Dienstag, 18. November 2014
Do processing speed and short-term storage exhaust the relation between working memory capacity and intelligence?
Do processing speed and short-term storage exhaust the relation between working memory capacity and intelligence? Cai-Ping Dang, Johan Braeken, Roberto Colom, Emilio Ferrer, Chang Liu Personality & Individual Differences (Feb 2015) Highlights
The roles of processing speed (PS) and short-term storage (STM) were analyzed.
PS accounts for the relation between WMC and Fluid intelligence (Gf).
STM and PS exhaust the correlation between WM and crystallized intelligence (Gc).
PS underlies the correlation between WMC and intelligence.
PS’ relevance decreases when cognitive tasks rely on more acquired crystallized knowledge.
The roles of processing speed (PS) and short-term storage (STM) for explaining the relationship between working memory capacity (WMC) and intelligence are analyzed at the latent variable level. 253 Chinese college students completed thirty-two measures from different content domains tapping the cognitive constructs of interest. The key findings showed that (a) PS accounts for the relationship between WMC and fluid intelligence, (b) STM and PS are required for explaining the correlation between crystallized intelligence and WMC. Therefore, this study provides support for the view that PS underlies the correlation between WMC and intelligence, yet with the nuance that its relevance decreases when cognitive tasks rely on crystallized knowledge and skill.