Temporal stability and predictive validity of self-assessed hand preference with first and second graders

The test-retest reliability and predictive validity of a five-item hand preference questionnaire (writing, drawing, throwing a baseball, brushing teeth, and cutting with scissors) were investigated in a sample of 80 children attending first and second grade. After 1 month, 81% of the second choices were the same as the first choices. There were interitem differences in the reliabilities of the five items. Writing and drawing hand exhibited the greatest degree of temporal stability. Writing hand was the one task which was significantly related to visual field bias as indexed by a face perception task.     

Validity and temporal stability of the chimeric face technique for studying hemispheric processing asymmetries: Data from 6-through 14-year-old children

The validity and temporal stability of the chimeric face technique as a measure of cerebral hemispheric functioning in children were investigated. The method is based upon the observation that when a subject encounters a representation of the human face, the left side (from the observer's point of view) of the face dominates his or her perception of it. This bias was shown to be present in a majority of children ranging from 6 through 14 years old, and it was stronger for right-handers than for left-handers. The 1-month temporal stability of the bias was 67%, which is comparable to that of other surface methods. As in other split-message techniques, the typical left visual field bias was more reliable than the unusual right visual field bias. The implications of these data are discussed.     

Evidence of lower risk tolerance among public sector employees in their personal financial matters

Critics claim that excessive risk avoidance is characteristic of public sector workers. To test this contention, the financial risk tolerance scores of public sector and private sector employees who had used financial planning services were compared on a financial risk tolerance scale. Public sector employees scored lower on financial risk tolerance relative to private sector employees. Differences remained even after controlling for other variables linked to risk tolerance.     

Jaynes' chimeric faces: Another look into the mirror

In The Origin of Consciousness in the Breakdown of the Bicameral Mind, Jaynes (1976) presented a technique—involving the selection of the happier of two line-drawing chimeric faces—that is theorized to measure hemispheric laterality. Certain imperfections in the published stimuli have led some critics to question the task's validity, while others maintain that even the flawed stimuli are measuring some aspect of laterality. In this study, further data are presented to show that this task, despite its inherent biases, is still sensitive to differences in perception between left-handers and right-handers. The implications of this sensitivity are discussed.     

Believe it or not! longer questionnaires have lower response rates

The effects of questionnaire length on response rate and response bias were examined by conducting a mail survey of 8534 persons taking distance education courses in insurance and financial planning. In 14 replications, persons were randomly assigned to receive a long or short course evaluation questionnaire. Response rate for the short form averaged about 28% higher than for the long form, and was significantly higher in all 14 replications. A measure of course satisfaction appearing on both questionnaires showed no significant differences between the long and short form in 12 of the 14 replications. The results suggested that biased measurement of consumer satisfaction does not necessarily occur on a long questionnaire with a relatively low response rate.     

Facing up to the issues: Reply to Hellige (1983)

In a recent article in this journal, Hellige (Brain and Cognition, 2, 199-203, 1983) presented a critique of the chimeric-face technique that was used by us to validate a hand preference questionnaire. Data were presented by Hellige to show that the left visual field (LVF) bias that occurs on this task is due primarily to differences in detail in the features of the two faces and not because of right hemisphere dominance for face perception. In our rebuttal, we acknowledge that the two faces are not mirror-image duplicates of each other, but contend that this fact does not explain why differences between left-handers and right-handers have been observed on this task. Further data on the role of handedness as well as other variables impacting on this task are presented. A possible explanation is also offered for the rather small extent of LVF bias that Hellige obtained when he used corrected (i.e., true mirror-image) versions of Jaynes' chimeric faces.     

Religion and Spirituality in Oncology: An Exploratory Study of the Communication Experiences of Clinicians in Poland

Journal of Religion and Health - Communication with patients regarding oncology-related aspects is a challenging experience and requires a high level of skill from the interlocutors. The...     

Seasonal variations in the birth of left-handers: another look

An attempt was made to replicate a reported seasonal variation in the birth of left-handed females. The observed number of births per month (as well as season) did not depart from the number expected by chance. This is the second failure to observe the reported overrepresentation of November births.     

Intraperson Consistency in Financial Risk Tolerance Assessment: Temporal Stability,Relationship to Total Score,and Effect on Criterion-related Validity

Purpose  

In assessing financial risk tolerance it is common practice to compute an overall score but not the intraperson variability across test items (because the latter is believed to be just error variance). We analyzed (1) the stability of intraperson variability, (2) its correlation to the total score, (3) its moderating effect on validity coefficients, and (4) its relation to internal consistency reliability and test–retest reliability.     

Validity of the similarities ratio as a predictor of violent behavior: data from a mentally-retarded sample

It has been proposed that a low WAIS Similarities subtest scaled score, relative to the other subtests, is associated with violent behavior. The validity of this ratio was investigated in a sample of 106 mentally-retarded Ss. The ratio of Similarities to the sum of all the subtest scores was correlated with the Violent and Destructive Behavior domain from the Adaptive Behavior Scale. A very small (r = -0.11) and statistically-nonsignificant coefficient was derived, making this the third failure to replicate or generalize the validity of this index.