Lab Assignment 8: Cognition in Aging and Disease
A researcher is interested in studying changes in cognition as a function of healthy aging and in neurocognitive disease. She studies 3 groups of participants: A) younger, healthy controls (N=10), B) older, healthy controls (N=10), and C) patients with mild Alzheimer’s disease (AD; N=10). For the task, all participants are asked to name 100 pictures of nameable objects (e.g., fruits and vegetables, tools, animals, plants). After a delay of 1 hour, she then shows another 100 pictures of nameable objects, where half of the pictures (i.e., 50) are new (‘Novel’) and half of the pictures (i.e, 50) were shown during the previous session (‘Repeated’). Participants are again asked to name the items. She then compares reaction time (i.e., how quickly participants were able to name the pictures; noted below in seconds) for the Novel and Repeated items after the delay period across the 3 participant groups.
Use the following data and your online text chapter on aging to answer the questions below:
|Young Controls||Older Controls||AD Patients|
Key:#=Participant number (1-10=Young Controls, 11-20=Older Controls, 21-30=Alzheimer’s patients); Novel=average reaction time in seconds to novel pictures; Repeated=average reaction time in seconds to repeated pictures
What is the priming value for young controls (1 point)? What is the priming value for older controls (1 point)? What is the priming value for AD patients (1 point)?
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