Predicting a changing taste: Do people know what they will like?

A distinction is made between decision utility, experienced utility, and predicted utility and an experiment is reported addressing people's ability to forecast experienced utility. Subjects in two experiments made predictions of their future liking for stimuli to which they were then exposed daily for one week. The stimuli were ice cream in a pilot study, plain yogurt in the main study, and short musical pieces in both studies. Decreased liking was the modal prediction, even when the true outcome was increased liking, or reduced dislike. There was substantial stability of tastes, but there were also substantial individual differences in the size and even the sign of changes in liking with repeated exposure. There was little or no correlation between the predictions of hedonic change that individuals made and the changes they actually experienced.     

Human patellar reflex and conditioned reflex compared electromyographically

Inspite of continued work on the stretch reflex and “voluntary” movement study of the conditioned stretch reflex declined early in this century. The present experiments surveyed seven classical conditioning regimens for the human rectus femoris EMG seen after a blow to the patellar tendon. It was possible to (1) rule out conditioning to a knee touch that occured together with the tap, (2) establish weak conditioned stimulus, Sc, control for a tape recorder click and subsequent fist clench that preceded the tap by variable elapsed times, and (3) establish strong Sc control for a tone that sounded an invariant 0.27 sec before the tap. There were large differences, however, in Sc power across subjects, as measured by amplitude, latency, and frequency of conditioned EMG activity that occured prior to tap or when the tap was omitted. Purely reflexive responses, especially later EMG segments, also varied in amplitude and frequency, to support a conclusion that numerous controlling stimuli added or competed from trial to trial. Further disclosure of Sc contributions, including those from movement-generated stimulation, is warranted, especially for behaviors whose rhythmic timings, as in locomotion, might favor Pavlovian conditioning.     

Inferring Sublexical Correspondences from Sight Vocabulary: Evidence from 6- and 7-year-olds

We report an experiment designed to investigate 6-to-7-year-old children's ability to acquire knowledge of sublexical correspondences between print and sound from their reading experience. A computer database containing the printed word vocabulary of children taking part in the experiment was compiled and used to devise stimuli controlled for grapheme-phoneme correspondence (GPC) frequency and rime neighbourhood consistency according to the children's reading experience. Knowledge of GPC rules and rime units was compared by asking children to read aloud three types of nonword varying in regularity of GPC and consistency of rime pronunciation. Results supported the view that children can acquire knowledge of both GPC rules and rime units from their reading experience. GPC rule strength affects the likelihood of a GPC response; rime consistency affects the likelihood of a rime response.     

Short report: Is spatial information encoded automatically in memory?

A dual-task paradigm was used to test Hasher and Zacks' (1979) hypothesis that spatial memory is automatic. Subjects saw two sets of 16 words each, the words being presented singly in random corners of a monitor screen. They were asked to remember the words and the corner in which each word was shown. In addition, subjects were given a concurrent task to perform. This task was either “easy” (counting aloud by ones) or “difficult” (counting aloud by sevens). Attention was focused either on the memory task or on the counting task. Word recognition was better when subjects carried out the easier competing counting task and when subjects concentrated mainly upon remembering the words and their positions. Contingent spatial memory was unaffected by either manipulation, supporting the hypothesis that spatial memory is automatic.     

Multiple Child Food Hypersensitivity Impacts Positive Adjustment in Parents

The physical impacts of food hypersensitivities (e.g. food allergy, food intolerance) encompass wide ranging but individually specific reactions. In contrast, the psychological impact of such illnesses extends beyond the individual who suffers the sensitivity. No Australian studies have examined the psychosocial impact of parenting a child with food hypersensitivities. The aim of this study was to ascertain differences in the psychosocial profile of parents raising a food hypersensitive child. Australian parents were targeted through three national support organisations and answered questions regarding their psychological health. Of a total of 990 respondents, 599 had children. These families comprised 1316 children aged 0–18 (M?=?7.63 years) and more than half (n?=?393) of these families were managing a child with a food hypersensitivity. Parents showed no differences in measured distress. In contrast, positive adjustment was higher for parents of food intolerant children and children with both food allergy and food intolerance, compared to those with non-food hypersensitive children. Moreover parents of children with combined food hypersensitivities reported a greater degree of positive change. The finding that parents of food hypersensitive children were not reporting higher levels of stress than parents without a food hypersensitive child is in stark contradiction to international studies examining both food hypersensitivity and parents of children with a chronic disease more generally. However, it appears that the complexity of the food hypersensitivity had a positive impact on adjustment with parents of children with multiple types of food hypersensitivity reporting greater positive adjustment outcomes.     

A personal reaction to freud's paper ‘on beginning the treatment’

Abstract

Sometimes, when reading Freud, I imagine I hear the sound of far-off warning bells tolling their alarm somewhere deep in my mind. I feel as if I am experiencing a great sense of danger, as if I am a child being led by the hand into a confusing, directionless, murky wood by an adult who appears to know the way, yet whom I do not quite trust to keep hold of my hand. It is as if, although I read the decrepit, over-grown sign at the edge as we advanced under the eaves: proceed with caution: at risk of losing touch with reality, I was hurried quickly past by the firm grip of the Omnipotent Adult who plunged straight in, and whose knowledge I do not altogether credit. So, for me, reading some of Freud's papers has a distinctly nightmarish quality, an atmosphere of being slightly out-of-control, an unnerving feeling of being in severe danger of being sucked in.