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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

Example of the hue selection task.Notes: Each display contained the same hue (circles) at each of six different combinations of value and chroma. The six hues were used in different displays.
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f3-prbm-8-273: Example of the hue selection task.Notes: Each display contained the same hue (circles) at each of six different combinations of value and chroma. The six hues were used in different displays.

Mentions: Thirty-six stimuli were used made up from the combination of six hues (2.5PB, 5PB, 7.5PB, 10PB, 2.5P, and 5P) (Figure 2) at each of six combinations of value and chroma (4/10, 5/10, 6/10, 5/9, 6/8, and 7/10). Each hue set was presented as six circular stimuli (diameter =5.5 cm; visual angle =6.5°) equally spaced on the circumference of an imaginary circle around a fixation cross in the center of the screen, on a neutral gray background (Figure 3). The CIE6Y, x, and y chromaticity coordinates of the gray point of the monitor were 19.47 cd/m2, 0.336 cd/m2, and 0.344 cd/m2, respectively.


Categorical perception of color: evidence from secondary category boundary.

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

Example of the hue selection task.Notes: Each display contained the same hue (circles) at each of six different combinations of value and chroma. The six hues were used in different displays.
© Copyright Policy
Related In: Results  -  Collection

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

f3-prbm-8-273: Example of the hue selection task.Notes: Each display contained the same hue (circles) at each of six different combinations of value and chroma. The six hues were used in different displays.
Mentions: Thirty-six stimuli were used made up from the combination of six hues (2.5PB, 5PB, 7.5PB, 10PB, 2.5P, and 5P) (Figure 2) at each of six combinations of value and chroma (4/10, 5/10, 6/10, 5/9, 6/8, and 7/10). Each hue set was presented as six circular stimuli (diameter =5.5 cm; visual angle =6.5°) equally spaced on the circumference of an imaginary circle around a fixation cross in the center of the screen, on a neutral gray background (Figure 3). The CIE6Y, x, and y chromaticity coordinates of the gray point of the monitor were 19.47 cd/m2, 0.336 cd/m2, and 0.344 cd/m2, respectively.

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