A method for factoring large numbers of items

The computation of intercorrelation matrices involving large numbers of variables and the subsequent factoring of these matrices present a formidable task. A method for estimating factor loadings without computing the intercorrelation matrix is developed. The estimation procedure is derived from a theoretical model which is shown to be a special case of the multiple-group centroid method of factoring. Empirical checks have indicated that the model, even though it makes some stringent assumptions, can be applied to a variety of variables found in psychological factoring problems. It has been found to be particularly useful in factoring test items.     

Methodological issues in the assessment of sustained performance

In both military and industrial work settings, it has become desirable, and in many instances necessary, to require sustained performance beyond the apparently optimal 8-h workday. Research in this area may be viewed historically as having been focused in three major areas: (1) determining appropriate methodologies for measuring sustained performance, (2) investigating factors that influence sustained performance, and (3) searching for ways to enhance performance during sustained operations. On the basis of discussions held in Toronto in August 1984, observations are drawn and recommendations are made concerning the directions and content of future research.     

Dis-positioning Euthyphro

The Euthyphro objection is often perceived, rightly or wrongly, as the king objection to theistic meta-ethics. This paper proposes a response that hasn’t been much explored within the contemporary literature, based on the metaphysics of dispositions and natural law theory. The paper will first contend that there is a parallel between ways theists conceptualise God’s role in creating laws of nature and the ways God creates goods. Drawing upon these parallels I propose a possible response to the dilemma, where this response parallels the dispositionalist response as to how God creates laws of nature. I do this by first explicating a natural law theory of goodness, then suggesting how the ontology of dispositions can be used in a novel way to account for goods, and finally by explaining how all this relates to the dilemma. I conclude the paper by posing some objections to myself and providing some replies.     

Counselors’ Mandated Responsibility to Report Child Maltreatment: A Review of U.S. Laws

Although counselors in 44 states are mandatory reporters of child maltreatment, they may lack an understanding of their legally designated role. This article presents the results of a systematic review of child maltreatment reporting laws in all 50 states and the District of Columbia. The authors apply relevant legislation to real‐life contexts for counselors.     

A Psychometric Evaluation of the Behavioral Inhibition Questionnaire in a Non-Clinical Sample of Israeli Children and Adolescents

This study examined the psychometric properties of a Hebrew version of the Behavioral Inhibition Questionnaire (BIQ) in a non-clinical sample of Israeli children and adolescents. We produced a Hebrew translation of the BIQ and collected 227 responses to it from parents of children aged 4–15. Some respondents in the larger sample also completed the Screen for Child Anxiety Related Emotional Disorders (SCARED) questionnaire (n?=?91) and the Conners’ Abbreviated Parent-Teacher (CONNERS) questionnaire (n?=?39), in addition to the BIQ. Lastly, 21 children of BIQ respondents (aged 8–14) completed a self-report version of the questionnaire. Confirmatory factor analysis (CFA) was performed to assess how well the established six correlated factor model of the BIQ applied to the sample data. The Hebrew BIQ demonstrated good internal consistency (Chronbach’s α?=?.94, n?=?227) and 3 month test–retest reliability, (r?=?.95, p?<?.001, n?=?21). It also showed both convergent validity, as scores on the BIQ were correlated with the SCARED (r?=?.66, p?<?.01. n?=?91), and discriminant validity, as BIQ scores were not correlated with the CONNERS (r?=?.24, n?=?39). Finally, mother reports of BI were significantly correlated to child reports of BI via the BIQ (r?=?.60, p?<?.01, n?=?21). Thus, through this preliminary study we demonstrated that the Hebrew version of the BIQ is an effective tool for screening for BI among Israeli children, making it a useful instrument for future research.     

Response time modeling reveals multiple contextual cuing mechanisms

Contextual cuing refers to a response time (RT) benefit that occurs when observers search through displays that have been repeated over the course of an experiment. Although it is generally agreed that contextual cuing arises via an associative learning mechanism, there is uncertainty about the type(s) of process(es) that allow learning to influence RT. We contrast two leading accounts of the contextual cuing effect that differ in terms of the general process that is credited with producing the effect. The first, the expedited search account, attributes the cuing effect to an increase in the speed with which the target is acquired. The second, the decision threshold account, attributes the cuing effect to a reduction in the response threshold used by observers when making a subsequent decision about the target (e.g., judging its orientation). We use the diffusion model to contrast the quantitative predictions of these two accounts at the level of individual observers. Our use of the diffusion model allows us to also explore a novel decision-level locus of the cuing effect based on perceptual learning. This novel account attributes the RT benefit to a perceptual learning process that increases the quality of information used to drive the decision process. Our results reveal both individual differences in the process(es) involved in contextual cuing but also identify several striking regularities across observers. We find strong support for both the decision threshold account as well as the novel perceptual learning account. We find relatively weak support for the expedited search account.     

The ability to self-tickle following Rapid Eye Movement sleep dreaming

Self-produced tactile stimulation usually feels less tickly--is perceptually attenuated--relative to the same stimulation produced externally. This is not true, however, for individuals with schizophrenia. Here, we investigate whether the lack of attenuation to self-produced stimuli seen in schizophrenia also occurs for normal participants following REM dreams. Fourteen participants were stimulated on their left palm with a tactile stimulation device which allowed the same stimulus to be generated by the participant or by the experimenter. The level of self-tickling attenuation did not differ between REM and non-REM sleep awakening conditions, where presence or absence of an accompanying dream was not controlled for. However, for the female participants, when awakening occurred from an REM sleep dream, self-stimulation ratings were higher than for external stimulation, whereas ratings after NREM sleep unaccompanied by a dream were lower for self-stimulation than for external stimulation. These results indicate deficits in self-monitoring and a confusion between self- and externally generated stimulation accompany REM dream formation.     

Effects of self-evaluation on the P300 event-related potential

The effects of self evaluation on the P300 event-related potential (ERP) were explored with 56 participants (16 men, 40 women; M age = 23.4 yr., SD = 1.2) across three conditions. The conditions included (1) a standard ERP auditory oddball discrimination between a random target (15% occurrence) and standard stimuli (85% occurrence), (2) the oddball task followed by the additional cognitive task of maintaining a mental count of the target tones, and (3) the oddball task followed by the additional cognitive task of self-evaluating whether they felt surprised by the current occurrence of the target tone. The added cognitive requirements for Conditions 2 and 3 required the subjects to maintain a cognitive readiness for the secondary stimulus-related task during their sensory discrimination response for the standard oddball task. During the self-evaluation condition, the P300 amplitude was significantly larger across all recording locations than the regular oddball condition and the cognitive count condition.