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Full-Text Articles in Social and Behavioral Sciences
Evaluation Of Cognitive Control Using Non-Gaussian Reaction Time Distributions In Fractionated Executive Function Tasks, Dmitriy Kazakov
Evaluation Of Cognitive Control Using Non-Gaussian Reaction Time Distributions In Fractionated Executive Function Tasks, Dmitriy Kazakov
Theses and Dissertations
The present study seeks to further investigate and refine the three-factor model of executive function (EF; Inhibition, Shifting, and Monitoring/Updating) known as the unity/diversity framework (Miyake et al., 2000). Past work in this area utilized “power” tasks that prioritize accuracy and difficulty, but real-world problem-solving incentivizes quick and efficient solutions. Ten computerized reaction time (RT) tasks: four elementary cognitive tasks (ECTs; Jensen, 1987; Santos, 2016) with progressively increasing task demands and six EF tasks. The ratio scale of RT necessitated the use of non-Gaussian statistics to better describe distribution shape, while diffusion modeling (DM; Ratcliff, 1978) was used to interpret …
A Distributional And Theoretical Analysis Of Reaction Time In The Reversal Task Across Adulthood, Kaitlynne N. Leclaire
A Distributional And Theoretical Analysis Of Reaction Time In The Reversal Task Across Adulthood, Kaitlynne N. Leclaire
Theses and Dissertations
The frontal lobes are known to atrophy with age (Lockhart & DeCarli, 2014) and integrity of this region has been implicated in maintaining executive functioning (Chayer & Freedman, 2001). Reversal learning tasks are frequently used in experimental paradigms to assess components of executive function. Extant reversal learning literature has largely assessed measures of accuracy, but reaction time (RT) has not yet been well characterized. The current study examines the empirical RT distribution of the reversal task by utilizing distributional and theoretical analyses to better characterize performance and how it changes with age. Participants included 43 young (ages 18-30; M = …