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Categorical perception of color: evidence from secondary category boundary.

Al-Rasheed AS - Psychol Res Behav Manag (2015)

Bottom Line: All spoke Arabic as their first language, and all were undergraduate or postgraduate students at King Saud University.Their ages ranged from 18-35 years with a mean age of 21.9 years (SD =5.2).The result indicated that for Experiments 1 and 2, it appeared that the Arabic blue-purple category boundary was approximately 10PB and it is in the same location as for English.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, King Saud University, Riyadh, Kingdom of Saudi Arabia.

ABSTRACT
Despite a plethora of behavioral research exploring the phenomenon of color categorical perception (CP) known as "better discrimination between pair of colors stimuli from different categories and pair of colors stimuli from the same category even when the stimulus differences between the pairs of stimuli are equal", most of the evidence for the CP of color was derived from Roman or top-to-down script readers and very rarely from right-to-left script readers in primary category. To date, no studies of color CP have been conducted on right-to-left script readers in secondary category boundary to support this theory. Three experiments have been conducted: Experiments 1 and 2 established the Arabic blue-purple secondary category boundary, and Experiment 3 tested the CP of color in the blue-purple category boundary. Sixty participants (30 men and 30 women) took part in this study. All spoke Arabic as their first language, and all were undergraduate or postgraduate students at King Saud University. Their ages ranged from 18-35 years with a mean age of 21.9 years (SD =5.2). The result indicated that for Experiments 1 and 2, it appeared that the Arabic blue-purple category boundary was approximately 10PB and it is in the same location as for English. For Experiment 3, reaction times in the between-categories condition were significantly faster than those in the within-category condition; this suggested that CP of color was shown in the Arabic's blue-purple secondary category boundary.

No MeSH data available.


Related in: MedlinePlus

Mean response times (±SE) with SE bars for correct trials for male and female participants for identification of the within/cross-category of chromatic target among distractors.Abbreviation: SE, standard error.
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f8-prbm-8-273: Mean response times (±SE) with SE bars for correct trials for male and female participants for identification of the within/cross-category of chromatic target among distractors.Abbreviation: SE, standard error.

Mentions: Median RTs for each subject were calculated for each combination of sex and category for correct trials. Although female participants (mean =406 ms, SD =54) responded ~31 ms faster than male participants (mean =437, SD =65), this difference was not significant (F(1,9)=4.93, MSE =9954.0, P=0.58). For the category factor, there was a significant effect; cross-category responses (mean =380.8, SD =38.1) were approximately 82 ms faster than within-category responses (mean =462.8, SD =52.1; F(1,9)=46.9, MSE =67240.0, P<0.001). The sex-by-category interaction was also not significant, F(1,9)=0.005, MSE =5.62, P<0.94. From Figure 8, the no interaction appears to be due to the larger category effect for cross vs within only but not for the sex male vs female. This impression was supported by paired samples t-tests (two-tailed) used to investigate the category for each sex. There was a significant category effect for the male (t(9)=4.59, P<0.001), and also for the female (t(9)=6.05, P=0.001).


Categorical perception of color: evidence from secondary category boundary.

Al-Rasheed AS - Psychol Res Behav Manag (2015)

Mean response times (±SE) with SE bars for correct trials for male and female participants for identification of the within/cross-category of chromatic target among distractors.Abbreviation: SE, standard error.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664492&req=5

f8-prbm-8-273: Mean response times (±SE) with SE bars for correct trials for male and female participants for identification of the within/cross-category of chromatic target among distractors.Abbreviation: SE, standard error.
Mentions: Median RTs for each subject were calculated for each combination of sex and category for correct trials. Although female participants (mean =406 ms, SD =54) responded ~31 ms faster than male participants (mean =437, SD =65), this difference was not significant (F(1,9)=4.93, MSE =9954.0, P=0.58). For the category factor, there was a significant effect; cross-category responses (mean =380.8, SD =38.1) were approximately 82 ms faster than within-category responses (mean =462.8, SD =52.1; F(1,9)=46.9, MSE =67240.0, P<0.001). The sex-by-category interaction was also not significant, F(1,9)=0.005, MSE =5.62, P<0.94. From Figure 8, the no interaction appears to be due to the larger category effect for cross vs within only but not for the sex male vs female. This impression was supported by paired samples t-tests (two-tailed) used to investigate the category for each sex. There was a significant category effect for the male (t(9)=4.59, P<0.001), and also for the female (t(9)=6.05, P=0.001).

Bottom Line: All spoke Arabic as their first language, and all were undergraduate or postgraduate students at King Saud University.Their ages ranged from 18-35 years with a mean age of 21.9 years (SD =5.2).The result indicated that for Experiments 1 and 2, it appeared that the Arabic blue-purple category boundary was approximately 10PB and it is in the same location as for English.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, King Saud University, Riyadh, Kingdom of Saudi Arabia.

ABSTRACT
Despite a plethora of behavioral research exploring the phenomenon of color categorical perception (CP) known as "better discrimination between pair of colors stimuli from different categories and pair of colors stimuli from the same category even when the stimulus differences between the pairs of stimuli are equal", most of the evidence for the CP of color was derived from Roman or top-to-down script readers and very rarely from right-to-left script readers in primary category. To date, no studies of color CP have been conducted on right-to-left script readers in secondary category boundary to support this theory. Three experiments have been conducted: Experiments 1 and 2 established the Arabic blue-purple secondary category boundary, and Experiment 3 tested the CP of color in the blue-purple category boundary. Sixty participants (30 men and 30 women) took part in this study. All spoke Arabic as their first language, and all were undergraduate or postgraduate students at King Saud University. Their ages ranged from 18-35 years with a mean age of 21.9 years (SD =5.2). The result indicated that for Experiments 1 and 2, it appeared that the Arabic blue-purple category boundary was approximately 10PB and it is in the same location as for English. For Experiment 3, reaction times in the between-categories condition were significantly faster than those in the within-category condition; this suggested that CP of color was shown in the Arabic's blue-purple secondary category boundary.

No MeSH data available.


Related in: MedlinePlus