Cognitive Assessment Case Study

1913 Words 8 Pages
Case Study of Cognitive Assessment
Vickneswary D/O Jeraman
TM15-10172
TMC Academy
Module: CPSY
Lecturer: Dr Eliza Berezina
Date of Submission: July 3, 2015
Word Count: 1914 Abstract
This paper is about cognition and methods of assessment to test the cognitive level of an individual. It is targeted on four main tests to evaluate the level of perception, attention, short term memory (STM) and long term memory (LTM) of a selected person. The four main tests are Muller-Lyer Illusion test to test the perception level, stroop effect to test the attention, remember 12 words task to test the STM and finally remember 10 pictures task to test the LTM. This also includes a short introduction on the person who is tested, followed by the cognitive
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In top down processing, our goals, past experience, knowledge, expectations, memory, motivations or cultural background guide our perceptions of objects or events (Nelson, 1993). Top down process is learned through experience. For instance, stopping at traffic when there’s red light and crossing when there’s green light is an automatic human reaction as this situation has already been experienced, interpreted and verified by our brain. In top down process, our brain sends down instruction for the action required based on past experience. There are four major Gestalt principles of perceptual organisation which are similarity, proximity, good continuation and pragnanz. Cognitive assessment methods for perception include the Muller – Lyer illusion where the perception level of an individual is tested based on size consistency. For example, Daprati and Gentilucci used a task to compare the perception of shaft length using matching finger-thumb distance and drawings and they overshoot target size by …show more content…
Both stage 1 and 2 tests were conducted thrice. Linges scored 40/40 on the first stage by reading out all 40 words correctly in an average of 30.05 seconds. However, the results for the 2nd stage differed enormously. On average he scored 26/40 and the time taken was 55.40 seconds. Linges’s attention was fairly good based on the test and the reaction time increased when the difficulty of the task increased. However, there was not much difference in the number of correct words. This can be related to Reisberg’s opinion on Stroop test “knowing about this effect is no protection-the processes are not open to control.” (Reisberg, 1997, p. 603)
The third test was for the STM. When Linges was tested 3 minutes after showing the words, he remembered 10 words out of the 12 words shown to him. He was not allowed to repeat the words within the 3 minutes and he was distracted with other topics. Based on the test, the STM is working at an average capacity if Linges is able to remember at least 5 to 9 words from the list. His STM is poor if it hits below 5 and it is good when he is able to remember 10 to 12 words. Linges’s STM is working at high capacity based on the grading scale of the

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