Search PubMed⌕ Search

Biomedical subjects

R Loo

Publications and source records attributed to R Loo.

15 recordsLinked to original sources
PubMed1979

Note on the relationship between trait anxiety and the Eysenck Personality Questionnaire.

Administered the State-Trait Anxiety Inventory A-Trait scale and the Eysenck Personality Questionnaire to 97 females and 105 males under neutral conditions. The interrelationships gave limited support to Eysenck's hypothesis that anxiety is a dimension oblique to extraversion and neuroticism such that high anxiety is associated with high introversion and neuroticism. Trait anxiety was independent of the psychoticism and lie dimensions.

Adolescent↗
PubMed1979

The orthogonal rotation of factors in clinical research: a critical note.

Examined the current trends in rotation procedures used in factor analyses in clinical research. It was found that orthogonal rotations, usually varimax procedure, were overwhelmingly the rotational choice. It was suggested that in many analyses, investigators in this area of research may be imposing orthogonality on data that might better be interpreted as oblique factors. Guidelines were presented for consideration in the selection and reporting of rotational procedures in clinical research.

Factor Analysis, Statistical↗
PubMed1979

An evaluation of the Briggs-Nebes modified version of Annett's handedness inventory.

The Briggs-Nebes (1975) modified version of Annett's (1967) handedness inventory was administered to 59 female and 51 male undergraduates and 101 nursing students. J-shaped distributions of scores in the dextral direction and significant sex differences such that males were more sinistral than females were found. The inventory was found to be multi-dimensional with up to three factors, power, skill, and rhythm in order of importance. The utility of the modified inventory was supported and recommendations were made concerning the use of subscale or factor scores in addition to overall scores.

Factor Analysis, Statistical↗
PubMed1979

A psychometric investigation of the Eysenck Personality Questionnaire.

The Eysenck Personality Questionnaire was administered to 139 females and 123 males. Scale statistics were obtained and hierachial factor analyses were performed. The P scale was found to have low internal consistency reliabilities and to covary with the L scale in the female subsample. Factor analyses showed recovery of E scale items in a secondary factor, Social Extraversion, without an impulsivity primary factor. No P and N dimensions recovered; rather components of each scale interrelated in two meaningful dimensions at the tertiary level.

Adolescent↗
PubMed1979

The State-Trait Anxiety Inventory A-Trait Scale: dimensions and their generalization.

The State-Trait Anxiety Inventory A-Trait scale was administered to 152 female and 158 male students. Principal-components factor analyses yielded four orthogonal factors for each sex. The findings indicated that factor pattern comparisons should be made prior to pooling data across sex for psychometric investigations. Also, limited support was found for the generalization of dimensions across sex and samples both within and between cultures.

Adjustment Disorders↗
PubMed1978

Cautionary note on the use of short state-anxiety measures.

The report noted that the use of high item-remainder coefficients as the sole criterion in the selection of items for short state-anxiety scales from full scales can lead to inaccurate interpretation of results. It was demonstrated that the use of a four-item state-anxiety scale from the State-Trait Anxiety Inventory A-State scale based on high item-remainder coefficients changed relationships in a previously reported study which used full-scale scores. It was proposed that such changes in relationships were the result of selecting four items which happen to load on only one of three dimensions of the A-State scale. The criterion of high item-remainder coefficents alone may be inadequate in the formation of short state-anxiety scales.

Anxiety↗
PubMed1978

Personality dimensions and reversible perspective in Embedded Figures Test.

The study examined the relationship between performance on reversible-perspective items in individual and group embedded-figures tests and remaining items, personality and performance variables in two samples of normal females. Performance on the reversible-perspective items was better than on the remaining items in the individual test and as good as other items in the group test. Those who experienced difficulty in solving the reversible-perspective items had more "psychiatric" complaints and greater sociability than subjects who experienced little difficulty.

Female↗
PubMed1977

Components underlying the relation between field dependence and extraversion.

Components of Eysenck's Extraversion scale were examined to account for previous findings indicating that field independence, as measured by individual and group forms of the embedded-figures test, is associated with Introversion. In two of the three samples of female unversity students, field independence, as measured by the Group Embedded Figures Test, was associated with low impulsivity and slow decision time, as measured by items on Eysenck's Extraversion scale.

Extraversion, Psychological↗
PubMed1976

Anxiety and perceptual articulation.

The study investigated Witkin's suggestion that low manifest anxiety is associated with relatively high perceptual articulation, whereas high anxiety is associated with relatively low perceptual articulation. Previous research typically has not provided adequate control for subjects' IQ; therefore, results may have been confounded by differences in subjects' ability. The study attempted to clarify the relationship between state and trait anxiety and perceptual articulation when IQ was controlled for 60 female subjects, who fell within a predetermined IQ range and were blocked into low, moderate and high A-Trait groups. Half of each group was assigned to either low or high ego-involving conditions. All subjects completed the Embedded-figures Test, Gestalt Completion and Concealed Words Test. Contrary to Witkin, the study yielded no significant relationship between anxiety and perceptual articulation.

Adolescent↗
PubMedDate not supplied

Measurement of neo-Pavlovian properties of higher nervous activity by motor reaction-time tasks.

A preliminary study involving 80 paid subjects, 40 of each sex, investigated the usefulness of motor response-time tasks as measures of three neo-Pavlovian properties of higher nervous activity, excitatory strength, dynamism, and mobility. Six independent factors were extracted from a set of variables measuring those properties. These factors demonstrated the independence of the three properties, of the excitatory and inhibitory processes in dynamism and mobility, and of strength and sensitivity at least when such tasks are used as measures of properties in the auditory modality. These findings are promising, however, further investigation is required to validate these tasks against the classical tests of properties of higher nervous activity.

Acoustic Stimulation↗