Negro children's performance on a discrimination task as a function of examiner race and verbal incentive.

1965 ◽  
Vol 2 (6) ◽  
pp. 839-843 ◽  
Author(s):  
Wallace A. Kennedy ◽  
Manuel Vega
Keyword(s):  
Discrimination Task ◽  
Examiner Race

Stimulus Ratio Effects on Speech Discrimination by Children and Adults

1991 ◽  
Vol 34 (3) ◽  
pp. 671-678 ◽  
Author(s):  
Joan E. Sussman
Keyword(s):  
Discrimination Task ◽  
Response Pattern ◽  
Response Patterns ◽  
Speech Discrimination ◽  
Adult Group ◽  
Discrimination Accuracy ◽  
Formant Frequency ◽  
Response Strategies ◽  
Place Of Articulation ◽  
Adults And Children

This investigation examined the response strategies and discrimination accuracy of adults and children aged 5–10 as the ratio of same to different trials was varied across three conditions of a “change/no-change” discrimination task. The conditions varied as follows: (a) a ratio of one-third same to two-thirds different trials (33% same), (b) an equal ratio of same to different trials (50% same), and (c) a ratio of two-thirds same to one-third different trials (67% same). Stimuli were synthetic consonant-vowel syllables that changed along a place of articulation dimension by formant frequency transition. Results showed that all subjects changed their response strategies depending on the ratio of same-to-different trials. The most lax response pattern was observed for the 50% same condition, and the most conservative pattern was observed for the 67% same condition. Adult response patterns were most conservative across condition. Differences in discrimination accuracy as measured by P(C) were found, with the largest difference in the 5- to 6-year-old group and the smallest change in the adult group. These findings suggest that children’s response strategies, like those of adults, can be manipulated by changing the ratio of same-to-different trials. Furthermore, interpretation of sensitivity measures must be referenced to task variables such as the ratio of same-to-different trials.

Facial emotion discrimination task strategy: Fixed or malleable?

2010 ◽  
Author(s):  
Joel D. Dickinson ◽  
Amanda Lalande ◽  
Melanie Perron ◽  
Annie Roy-Charland
Keyword(s):  
Discrimination Task ◽  
Facial Emotion ◽  
Task Strategy

Do pigeons perceive Zöllner illusion?--An analysis using a gap discrimination task

2009 ◽  
Author(s):  
Sota Watanabe ◽  
Noriyuki Nakamura ◽  
Kazuo Fujita
Keyword(s):  
Discrimination Task
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