psychology 

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KembaraXtra-Psychology – British Sign Language (BSL)


British Sign Language (BSL) is a fully developed visual–gestural language used primarily by Deaf communities in the United Kingdom. It conveys meaning through hand shapes, movements, facial expressions, and the spatial positioning of signs relative to the body. BSL has its own grammar and syntax distinct from spoken English. It is not mutually intelligible with American Sign Language, reflecting independent linguistic development. BSL plays a central role in Deaf culture and communication.
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KembaraXtra-Psychology – Brightness Constancy


Brightness constancy is a term sometimes used synonymously with lightness constancy, describing the tendency to perceive the brightness of objects as stable despite changes in illumination. However, some researchers prefer to reserve the term lightness constancy to avoid conceptual confusion.
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KembaraXtra-Psychology – Brightness Contrast

Brightness contrast refers to the perceptual phenomenon in which the brightness of an area appears different depending on the luminance of surrounding areas. It is closely related to lightness contrast and illustrates how visual perception depends on contextual comparison rather than absolute luminance.


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KembaraXtra-Psychology – Brightness Masking


Brightness masking is a form of visual masking in which a bright flash of light interferes with the perception of another visual stimulus. The intense luminance disrupts normal visual processing, reducing visibility of the target stimulus.


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KembaraXtra-Psychology – Briquet’s Syndrome

Briquet’s syndrome is an older term for what is now classified as somatization disorder or somatic symptom disorder. It refers to a chronic condition characterized by multiple physical complaints that cannot be fully explained by medical findings and that cause significant distress or impairment. The syndrome highlights the complex interaction between psychological processes and bodily symptoms.


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KembaraXtra-Psychology – Brightness Enhancement

Brightness enhancement is the phenomenon whereby a light flickering at approximately 10 hertz appears brighter than the same light presented steadily. This effect is thought to result from increased activity in retinal ganglion cells at certain flicker frequencies below the critical flicker fusion threshold.


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KembaraXtra-Psychology – Bril

A bril is a unit used to quantify perceived brightness. In this system, a luminance level of one millilambert is arbitrarily assigned a value of 100 brils. Although not commonly used in everyday measurement, the unit reflects early attempts to standardize subjective brightness perception in psychophysical research.


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KembaraXtra-Psychology – Bulimia

Bulimia originally referred to pathological overeating or excessive appetite. In modern usage, it is often shorthand for bulimia nervosa, an eating disorder involving cycles of binge eating and compensatory behaviors. The broader medical meaning includes hyperphagia resulting from neurological or metabolic causes.


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KembaraXtra-Psychology – Bulimia Nervosa (BN)

Bulimia nervosa is an eating disorder characterized by recurrent binge-eating episodes accompanied by inappropriate compensatory behaviors such as vomiting, laxative misuse, fasting, or excessive exercise. Individuals typically place excessive importance on body weight and shape in their self-evaluation. Unlike anorexia nervosa, body weight may remain within a normal range, making the disorder less visible but equally serious.


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KembaraXtra-Psychology – Bundle Hypothesis

The bundle hypothesis is the idea that a complex perception is simply the sum of its individual sensory elements. This view was criticized by Gestalt psychologists, who argued that perception involves organized wholes that are more than the mere aggregation of parts.


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