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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

Illustration of the four stimuli used.Notes: L1 is the location of hue for the blue target (stimuli B1 and B2 are from the same category, “blue”, while stimulus P1 belongs to a different category, “purple”). L2 is the location of hue for the purple target (stimuli P2 and P2 are from the same category, “purple”, while stimulus B2 belongs to a different category, “blue”). The dashed line indicates the Arabic blue–purple boundary.
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f6-prbm-8-273: Illustration of the four stimuli used.Notes: L1 is the location of hue for the blue target (stimuli B1 and B2 are from the same category, “blue”, while stimulus P1 belongs to a different category, “purple”). L2 is the location of hue for the purple target (stimuli P2 and P2 are from the same category, “purple”, while stimulus B2 belongs to a different category, “blue”). The dashed line indicates the Arabic blue–purple boundary.

Mentions: As shown in Figure 6, three color stimuli were used in this experiment; two blues (2.5PB and 7.5PB) and one purple (2.5P); value and chroma were kept constant (5/10). The separation between adjacent stimuli was five Munsell hue steps (AE ~15). Their CIELUV coordinates (u*,v*) were as follows: −31.21, 63.17; −11.32, −63.63; and 9.49, −56.44; L*=51.58; a Cambridge Research Systems ColorCAL colorimeter was used to measure the CIE co-coordinates, and they were displayed on a 17-inch CRT model GDM-F520.


Categorical perception of color: evidence from secondary category boundary.

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

Illustration of the four stimuli used.Notes: L1 is the location of hue for the blue target (stimuli B1 and B2 are from the same category, “blue”, while stimulus P1 belongs to a different category, “purple”). L2 is the location of hue for the purple target (stimuli P2 and P2 are from the same category, “purple”, while stimulus B2 belongs to a different category, “blue”). The dashed line indicates the Arabic blue–purple boundary.
© Copyright Policy
Related In: Results  -  Collection

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

f6-prbm-8-273: Illustration of the four stimuli used.Notes: L1 is the location of hue for the blue target (stimuli B1 and B2 are from the same category, “blue”, while stimulus P1 belongs to a different category, “purple”). L2 is the location of hue for the purple target (stimuli P2 and P2 are from the same category, “purple”, while stimulus B2 belongs to a different category, “blue”). The dashed line indicates the Arabic blue–purple boundary.
Mentions: As shown in Figure 6, three color stimuli were used in this experiment; two blues (2.5PB and 7.5PB) and one purple (2.5P); value and chroma were kept constant (5/10). The separation between adjacent stimuli was five Munsell hue steps (AE ~15). Their CIELUV coordinates (u*,v*) were as follows: −31.21, 63.17; −11.32, −63.63; and 9.49, −56.44; L*=51.58; a Cambridge Research Systems ColorCAL colorimeter was used to measure the CIE co-coordinates, and they were displayed on a 17-inch CRT model GDM-F520.

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