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Biomedical subjects

R A Dykman

Publications and source records attributed to R A Dykman.

6 recordsLinked to original sources
PubMed1979

Familial anthropophobia in pointer dogs?

This article assesses a dog model in terms of a proposed cross-species definition of phobia, the model referring to a strain of unstable dogs that has been produced by selection and inbreeding. The unstable dogs are contrasted with a strain of stable dogs. New findings are presented on approach and activity behavior toward three stimulus objects (man, another dog, and a sheet-covered chair) in a naturalistic setting. The fear response of unstable dogs to objects other than man habituates gradually, whereas the fear response to the sight of man is far more enduring, suggesting a relatively specific fear of man.

Animals↗
PubMed1979

A psychosocial study of hyperactive and learning-disabled boys.

Adequately reading hyperactive boys, normally behaved learning-disabled (LD) boys, and normal controls were contrasted on tests measuring personality traits, cognitive role taking, and moral resoning. Additionally, parents and teachers rated all children on a number of behaviors, and parents were interviewed in a process-oriented fashion to assess home stimulation potential. Hyperactive boys were rated more aggressive and anxious than LD boys and controls and had not been encouraged as much by parents to achieve. Hyperactives had been born to younger parents, on the average, and 25% lived with their mothers and stepfathers. None of the LD or control boys had stepfathers. The groups did not differ significantly in moral reasoning ability, cognitive role taking, or locus of control; on the Junior Personality Inventory hyperactives tended to have elevated scores on the neuroticism scale while LD boys had higher scores on the lie scale.

Aggression↗
PubMed1975

A special neurological examination of children with learning disabilities.

Children with "minimal brain dysfunction" and learning disabilities were found to have significantly more minor neurological signs than control children. Many of these signs become less obvious or disappear by the age of 11 years; therefore older cases are more similar to controls, whereas younger cases show lags or deficits at the highest levels of central nervous system functioning-language, fine motor co-ordination and cross-modality integrations.

Age Factors↗