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Diagnosing Short-term Memory Scanning Using The Systems Factorial Technology – Replication Studies

Mario Fific
Grand Valley State University ~ Psychology
Monica Van Til
Grand Valley State University, United States of America
Lola Erfourth
Grand Valley State University, United States of America
Tylor Kistler
Grand Valley State University, United States of America

Townsend and Fific (2004) published an influential short-term memory (STM) study in which they observed individual differences in serial and parallel STM scanning. The authors employed the systems factorial technology – the novel methodology which provides strong diagnostic tests of cognitive architectures, and presented a new method of manipulating probe-to-memory item processing speed for memory loads N=2. Three variables were manipulated in this experiment: number of processing elements (N=2), phonemic dissimilarity of a target to the particular memorized item (high, low) and duration between the memorized set and a target (short-long). In the original study 10 subjects participated in about 20 sessions each. In the current research we conducted a conceptual replication of the original study: two hundred subjects participated in 1 session each, and novel memory load conditions N=1 was included. The results added a converging evidence in testing serial/parallel processing in short-term memory scanning.


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