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S Torgersen

Publications and source records attributed to S Torgersen.

63 records · Page 4Linked to original sources
PubMed1980

Hereditary-environmental differentiation of general neurotic, obsessive, and impulsive hysterical personality traits.

The inheritance of General Neurotic, Obsessive, and Impulsive Hysterical personality traits has been studied in a sampling of 260 female and male adult same-sexed twins. At least one of the twins in each pair had been treated for neurotic or borderline disorders. The results showed that the General neurotic and the obsessive personality factor had a significantly but moderately high hereditary component. The same was also true for more than half of the 17 separate personality scales. No personality scales emerged as highly hereditary. Therefore, each item was analyzed separately, and items classified as either distinctly hereditary or environmental were placed in each of these two groups. The items of the two groups were separately factor-analyzed, and three hereditary and three environmental main factors emerged. The hereditary factors seemed to represent a basic core in the three personality factors of the total questionnaire, whereas the environmental factors could be explained as derivatives of early representation of the basic hereditary core, influenced by familial and cultural patterns.

Adult↗
PubMed1979

The determination of twin zygosity by means of a mailed questionnaire.

A mailed questionnaire dealing with similarity in childhood, and how often and by whom the twins were mixed up, was applied to 290 same-sex adult twin pairs. For about 75% of pairs ten genetic markers were analysed. The agreement in zygosity classification between questionnaire and blood typing was high. Irrespective of whether raw scores of discriminant function analysis was applied, the agreement was nearly 95%. When a decision tree was applied, the percentage rose to nearly 96%. Considering that probably four of the twin pairs were wrongly classified as MZ by genetic markers, the percentage rose to 96 and 98, respectively.

Adolescent↗
PubMed1979

The nature and origin of common phobic fears.

By means of a twin study an attempt was made to throw light upon the aetiology and nosology of phobic fears. Factor analyses revealed five factors, namely separation fears, animal fears, mutilation fears, social fears and nature fears. The study demonstrated that, apart from separation fears, genetic factors play a part in the strength as well as content of phobic fears. Environmental factors, affecting the development of dependence, reserve and neurotic traits generally, seemed also to be of some importance. It was further demonstrated that phobic fears were related to emotional and social adjustment and this was true to an even greater extent for separation fears.

Adult↗
PubMedDate not supplied

Differential perception of parental bonding in schizotypal and borderline personality disorder patients.

Fifty-four patients with schizotypal and/or borderline personality disorders were compared with 165 patients with other personality disorders and 52 patients with no personality disorders as to their perception of parental behavior in childhood. Both schizotypals and borderlines reported low care; however, schizotypals remembered underprotection and borderline overprotection. The study suggests parental neglect in the childhood memory of schizotypals and negative over-involvement for borderlines.

Adolescent↗