Children's dietary recalls from three validation studies: types of intrusion vary with retention interval

Using previously collected data of fourth‐grade children observed eating school meals and then interviewed, we categorized intrusions (food items reported but not observed eaten) as stretches (on the child's tray) or confabulations (not on the child's tray). We investigated intrusions, confabulations, and stretches and the role of liking, at different retention intervals (morning interviews about the previous day's intake; evening interviews about that day's intake) and under different reporting‐ order prompts (forward; reverse). As retention interval between consumption and report increased, the likelihood (1) increased that reported items were intrusions, that reported items were confabulations and that intrusions were confabulations; and (2) was constant that reported items were stretches. Results concerning reporting‐order prompts were inconclusive. Liking ratings were higher for matches (reports of items observed eaten) than stretches, for confabulations than stretches, and for matches than omissions (unreported items observed eaten), but did not vary by retention interval or reporting‐order prompts. Copyright © 2007 John Wiley & Sons, Ltd.     

Race, intelligence and political efficacy among school children

This paper focuses on the difference in political efficacy found between black and white pre-adults, and assesses a specific explanation of this racial difference, one that combines elements of the intelligence explanation with aspects of the social-deprivation explanation as outlined by Paul Abramson. The explanation suggests that the racial difference in feelings of political effectiveness is due to intelligence which, in turn, is basically a function of the social and economic environment. Focusing on a study of 421 black and white students, it is shown that the predictions from the theory are empirically valid. Most importantly, it is demonstrated that once intelligence is controlled for, there is little or no relationship between race and political efficacy--that is, the black and white students are approximately equal in their levels of political effectiveness. Thus the study lends empirical support to this particular explanation of the racial difference in political efficacy, and suggests, more generally, that intelligence may play a significant role in the political socialization process.     

Rubinstein-Taybi syndrome.

Rubinstein-Taybi Syndrome was first described in 1957 but only in 1963 as a distinguishable type of moderate mental retardation. The cause is still unknown although some type of genetic origin is possible. No consistent chromosomal abnormality has been demonstrated, the chromosomal analysis is normal, and cases are generally not considered hereditary. The recurrent risk for siblings is approximately 0.1% but may be as high as 50% for offspring of patients with the syndrome. The Rubinstein-Taybi syndrome is not at present detectable before birth and is evenly found in both males and females. The syndrome was thought to be rare but an increase in the number of reported cases each year suggests it is not as rare as estimated. It is thought to occur in about 1 in 300,000 births, and since it has become readily identifiable, more than 400 cases have been reported worldwide.     

Educational needs of school personnel regarding child abuse and/or neglect

From a review of literature a questionnaire was developed to identify problems related to child abuse/neglect in a rural school district. School administrators, regular and special education teachers, and counselors completed the survey to help establish more effective training programs. Analysis indicated that (1) school personnel need further assistance in dealing with problems pertaining to the maltreatment of students. (2) Formal, coordinated, workshop training for child abuse/neglect is needed. (3) Colleges and universities should offer instruction on abuse/neglect for persons preparing to work in schools. (4) School personnel need to be aware of and abide by the laws regarding reporting cases of abuse/neglect. (5) Improved communication among school, community, courts, and social service agencies is required for dealing wtih abuse cases. (6) School personnel should become more aware of what happens after abuse/neglect has been reported. Information from such analysis even for one school district can increase insight into problems.     

“Enacted” auditory images are ambiguous; “pure” auditory images are not

Previous research indicates that visual images are inherently unambiguous. The present study extends this argument to auditory imagery. In Experiment 1, subjects were able to reinterpret an imaged ambiguous auditory figure, but covert subvocalization apparently aided this reinterpretation. When subvocalization was blocked, reinterpretations were eliminated. Experiments 2 and 3 generalize this finding to different procedures and stimuli. Experiment 4 explores further the role of subvocalization, by showing that the likelihood of reinterpreting an imaged stimulus is directly proportional to the degree of enactment allowed. We argue that subvocalization or enactment provides an internal stimulus that is subject to reinterpretation. Without enactment, the “pure” auditory image is as unambiguous as a visual image. Thus, in both visual and auditory modalities, images come into being as representations and so are inherently meaningful.     

Contents of Volume 7

Volume Contents

Contents of Volume 7     

Reinforcement in an in vitro analog of appetitive classical conditioning of feeding behavior in Aplysia: blockade by a dopamine antagonist

In a recently developed in vitro analog of appetitive classical conditioning of feeding in Aplysia, the unconditioned stimulus (US) was electrical stimulation of the esophageal nerve (En). This nerve is rich in dopamine (DA)-containing processes, which suggests that DA mediates reinforcement during appetitive conditioning. To test this possibility, methylergonovine was used to antagonize DA receptors. Methylergonovine (1 nM) blocked the pairing-specific increase in fictive feeding that is usually induced by in vitro classical conditioning. The present results and previous observation that methylergonovine also blocks the effects of contingent reinforcement in an in vitro analog of appetitive operant conditioning suggest that DA mediates reinforcement for appetitive associative conditioning of feeding in Aplysia.     

Extensive lesions of cholinergic basal forebrain neurons do not impair spatial working memory

A recent studysuggests that lesions to all major areas of the cholinergic basal forebrain in the rat (medial septum, horizontal limb of the diagonal band of Broca, and nucleus basalis magnocellularis) impair a spatial working memory task. However, this experiment used a surgical technique that mayhave damaged cerebellar Purkinje cells. The present studytested rats with highlyselective lesions of cholinergic neurons in all major areas of the basal forebrain on a spatial working memorytask in the radial arm maze. In postoperative testing, there were no significant differences between lesion and control groups in working memory, even with a delayperiod of 8 h, with the exception of a transient impairment during the first 2 d of postoperative testing at shorter delays (0 or 2 h). This finding corroborates other results that indicate that the cholinergic basal forebrain does not playa significant role in spatial working memory. Furthermore, it underscores the presence of intact memoryfunctions after cholinergic basal forebrain damage, despite attentional impairments that follow these lesions, demonstrated in other task paradigms.