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Hunter syndrome

an X-linked recessive disease in which there is an excess of mucopolysaccharides in body tissues (see mucopolysaccharidosis). Almost exclusively affecting males, the disorder has two types, severe and attenuated. People with the severe type experience a decline in intellectual function and a rapid disease progression with short life expectancy. Individuals with the attenuated type typically live into adulthood and their intelligence is not affected. Heart disease and airway obstruction are major causes of death in people with both types of the disorder. Also called mucopolysaccharidosis Type II. [Charles Hunter (1872–1955), U.S. physician]

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Psychology term of the day

February 25th 2025

group

group

n. any collection or assemblage, particularly of items or individuals. For example, in social psychology the term refers to two or more interdependent individuals who influence one another through social interactions that commonly include structures involving roles and norms, a degree of cohesiveness, and shared goals. Such social groups thus are contrasted with aggregations. Similarly, in animal behavior, a group refers to an organized collection of individuals that moves together or otherwise acts to achieve some common goal (e.g., protection against predators) that would be less effectively achieved by individual action, and in research, it denotes a collection of participants who all experience the same experimental conditions and whose responses are to be compared to the responses of one or more other collections of research participants.