Mothers’ and Fathers’ Reluctance to Seek Psychological Help for Their Children

We investigated the gap between parents’ willingness to seek help for their children and their willingness to refer other parents to help, and the relationship of this gap to gender. Two hundred and eleven parent couples with elementary-school children reported their willingness to seek help from professional and informal sources for a hypothetical problem with their child, and their willingness to refer a friend’s child with an identical problem to similar help. Attitudes toward help seeking and parental behaviors were also measured. Findings revealed that parents were more willing to refer a friend’s child to professional help than they were to seek such help for their own child, although no gap was found regarding informal help. No gender differences were found regarding willingness to seek help or to refer another, although gender was related to variables that predicted help seeking.     

Personality factors and cervical premalignancy

The purpose of the study was to attempt a discrimination between stages of cervical premalignancy in terms of the four Eysenckian dimensions. It consisted of a quasi-prospective design applied to the presumed continuum of cervical premalignancy. The Ss were 88 women addressed by a physician or self-addressed for Pap smear examinations. Prior to the Pap smear they completed a demographic questionnaire and the Eysenck Personality Questionnaire providing scores of extraversion (E), neuroticism (N), psychoticism (P) and lie (L). By the Pap smear results there were four groups of women: healthy, suffering from vaginal or cervical inflammations, suffering from human papillomaviruses (HPV), and suffering from dysplasias or cervical intraepithelial neoplasms (CIN). ANOVA and discriminant analyses showed that the Eysenckian dimensions discriminated correctly with above chance significance between the groups, mainly between the healthy and inflammatory, on the one hand, and the HPV and CIN, on the other hand (on the basis of N and E scores), and less well between the healthy and inflammatory (on the basis of L scores), and least between the HPV and CIN (on the basis of P scores). As expected, in the healthy and inflammatory groups as compared with the HPV and CIN groups, N and P scores were higher whereas E and L scores were lower. The results indicate the correspondence between physiological and psychological characteristics and suggest especially the alternating relation between neuroticism and physical pathology.     

Electrophysiological correlates of encoding processes in a full-report visual working memory paradigm

Why are some visual stimuli remembered, whereas others are forgotten? A limitation of recognition paradigms is that they measure aggregate behavioral performance and/or neural responses to all stimuli presented in a visual working memory (VWM) array. To address this limitation, we paired an electroencephalography (EEG) frequency-tagging technique with two full-report VWM paradigms. This permitted the tracking of individual stimuli as well as the aggregate response. We recorded high-density EEG (256 channel) while participants viewed four shape stimuli, each flickering at a different frequency. At retrieval, participants either recalled the location of all stimuli in any order (simultaneous full report) or were cued to report the item in a particular location over multiple screen displays (sequential full report). The individual frequency tag amplitudes evoked for correctly recalled items were significantly larger than the amplitudes of subsequently forgotten stimuli, regardless of retrieval task. An induced-power analysis examined the aggregate neural correlates of VWM encoding as a function of items correctly recalled. We found increased induced power across a large number of electrodes in the theta, alpha, and beta frequency bands when more items were successfully recalled. This effect was more robust for sequential full report, suggesting that retrieval demands can influence encoding processes. These data are consistent with a model in which encoding-related resources are directed to a subset of items, rather than a model in which resources are allocated evenly across the array. These data extend previous work using recognition paradigms and stress the importance of encoding in determining later VWM retrieval success.     

The bar-cross-ellipse illusion: alternating percepts of rigid and nonrigid motion based on contour ownership and trackable feature assignment

We present a new multistable stimulus generated by continuously rotating an ellipse behind four fixed occluders. Despite the stimulus remaining constant, observers can alternate between one of four percepts: (1) a continuously morphing cross; (2) two independent perpendicular bars oscillating in depth; (3) a rigidly rotating ellipse observed behind the occluders; (4) a fixed cross observed through a continuously rotating, elliptical aperture. Interestingly, the initial percept naive observers tend to see is percept 1, which is the only nonrigid motion percept. This appears to be a violation of the hypothesized 'rigidity heuristic' in which rigid motion percepts tend to be perceived over retinally equivalent nonrigid ones. Here, we describe the relationships between each of the percepts and the assignment of contour ownership and figure/ground segmentation.     

The concept of validity

This article advances a simple conception of test validity: A test is valid for measuring an attribute if (a) the attribute exists and (b) variations in the attribute causally produce variation in the measurement outcomes. This conception is shown to diverge from current validity theory in several respects. In particular, the emphasis in the proposed conception is on ontology, reference, and causality, whereas current validity theory focuses on epistemology, meaning, and correlation. It is argued that the proposed conception is not only simpler but also theoretically superior to the position taken in the existing literature. Further, it has clear theoretical and practical implications for validation research. Most important, validation research must not be directed at the relation between the measured attribute and other attributes but at the processes that convey the effect of the measured attribute on the test scores.     

Surprises: low probabilities or high contrasts?

Outcome expectations can be expressed prospectively in terms of probability estimates, and retrospectively in terms of surprise. Surprise ratings and probability estimates differ, however, in some important ways. Surprises are generally created by low-probability outcomes, yet, as shown by several experiments, not all low-probability outcomes are equally surprising. To account for surprise, we propose a contrast hypothesis according to which the level of surprise associated with an outcome is mainly determined by the extent to which it contrasts with the default, expected alternative. Three ways by which contrasts can be established are explored: contrasts due to relative probabilities, where the obtained outcome is less likely than a default alternative; contrasts formed by novelty and change, where a contrast exists between the obtained outcome and the individual's previous experience; and contrasts due to the perceptual or conceptual distance between the expected and the obtained. In all these cases, greater contrast was accompanied by higher ratings of surprise.     

What is constructive empiricism?

An earlier (and much funnier) version of this paper was presented as Constructive Empiricism and Everyday Life at a conference on laws of nature at the University of Michigan in April, 1990. I am grateful to Bas van Fraassen for his generous response at the conference, and also to Paul Benacerraf, Lisa Eckstrom, Sally Haslanger, Jim Joyce, Peter Railton, Larry Sklar, Jamie Tappenden, Paul Thomson and Steve Yablo for comments, conversations, etc.