Mapping of the Anatomical Circuit of CaM Kinase-Dependent Courtship Conditioning in Drosophila

Globally inhibiting CaM kinase activity in Drosophila, using a variety of genetic techniques, disrupts associative memory yet leaves visual and chemosensory perception intact. These studies implicate CaM kinase in the plastic processes underlying learning and memory but do not identify the neural circuitry that specifies the behavior. In this study, we use the GAL4/UAS binary expression system to define areas of the brain that require CaM kinase for modulation of courtship conditioning. The CaM kinase-dependent neurons that determine the response to the mated female during conditioning and those involved in formation and expression of memory were found to be located in distinct areas of the brain. This supports the idea that courtship conditioning results in two independent behavioral modifications: a decrement in courtship during the conditioning period and an associative memory of conditioning. This study has allowed us for the first time to genetically determine the circuit of information flow for a memory process in Drosophila. The map we have generated dissects the behavior into multiple components and will provide tools that allow both molecular and electrophysiological access to this circuit.     

The Reliability and Validity of the ‘Rejection of Christianity Scale’ among Northern Irish Students

The present aim was to examine the reliability and validity of the ‘Rejection of Christianity Scale’ (Greer & Francis, 1992) among a sample of Northern Irish undergraduate students. A slightly modified version of the ‘Rejection of Christianity Scale’ was administered alongside questions of religiousness and practice. Among a sample of 217 Northern Irish undergraduate students, support was found for the reliability and unidimen‐sionality of the ‘Rejection of Christianity Scale’. The construct validity of the scale was demonstrated with males displaying more signs of rejecting Christianity than females. Furthermore, higher scores on the ‘Rejection of Christianity Scale’ were significantly associated with lower levels of self‐reported religiousness, and lower frequency of church attendance. Limitations of the present study are presented and a further possible modification of the ‘Rejection of Christianity Scale’ is presented.     

The detection of anisochrony in monaural and interaural sound sequences

Nakao and Axelrod (1976) and van Noorden (1975) showed that the threshold for discriminating an anisochronous duple rhythm (a series of clicks with a temporal offset on every other one) from an isochronous rhythm (no offset) is poorer when the clicks are presented alternately to the two ears than when they are presented to the same ears. Van Noorden reported that the difference between the thresholds in the alternating and nonalternating conditions varied with the tempo of the sequence. Nakao and Axelrod found invariance of this threshold difference with sequence speed. According to our quantification of temporal processing of interaural sequences, the latter result should be expected. We carried out five psychophysical experiments to establish interaural and monaural discrimination between isochronous and anisochronous rhythms. Across experiments, base time intervals of 60–720 msec were spanned. The main result was that we replicated the poorer discrimination for interaural sequences. This deterioration in discrimination was the same for all sequence speeds. It was also the case that the thresholds were almost constant up to a sound repetition rate of about 3 per second, but increased linearly with slower rates. This result supports evidence in the literature that temporal processing of sequences faster than about 3–4 sounds per second differs from temporal processing of slower sequences.     

Effects of training in rapid decoding on the reading comprehension of adult ESL learners

We report an experimental investigation of the effects on comprehension of increasing the decoding speed of three adult learners of English as a Second Language (ESL). Participants were taught to read lists of 25 difficult words in isolation until they could read the entire list at a mean rate of not more than 1.5 secs per word. They were then asked to read passages containing these words. Decoding speed and accuracy measures, for both the word lists and passages, and passage comprehension measures, were obtained. In a temporally contiguous within-subjects repeated trials reversal design, decoding training on isolated words was shown to be associated with significant increases in decoding speed and accuracy both in isolation and context, and improvements in the participants' comprehension. With all participants rate and accuracy gains in context were maintained in the final reversal phase, though the comprehension score gains did not. These results are discussed in terms of their implications for a decoding sufficiency hypothesis.     

Parent reports of child behavior problems: Bias in participation

This paper compares the characteristics of 274 children whose parents agreed to provide information about their children's functioning in research with children whose parents did not. Parents had provided permission for child participation in school-approved research. Measures included self-, peer, teacher, and parent ratings. Parents of minority children were less likely to participate than parents of nonminority children. Among nonminorities, children of parent participants were viewed as more socially skilled and liked by their peers; teachers rated them as having less attention problems, less depression, and better academic skills than children of nonparticipating parents. Among minorities, no differences emerged. Implications for research involving the use of parent ratings are discussed.Portions of this paper were presented at the annual meeting of the Society for Research in Child and Adolescent Psychopathology, Sarasota, Florida, February 1992. The authors appreciate the efforts of Shari Wasserstein in assisting with the organization of the data. The authors also appreciate the helpful comments of two anonymous reviewers.     

Traces of the Person: Max Scheler’s and Paul Ricoeur’s Attempts on Personal Ethics

To encounter a fellow-being does not mean only to see her face, to notice the color of her eyes, but to meet her eyes and to be addressed by her. Who one is irreducible to any objective property or value, and likewise cannot be comprehended through propositional statements in the manner of “talking about …” something. Rather, such comprehension demands an account of giving way to the appearance of the other as other. This account, prominently linked to E. Levinas’ “ethics as first philosophy,” has also been developed as phenomenological personalism. While Max Scheler developed his “Ethical Personalism” within his material Value Ethics, his Philosophy of Fellow-Feeling and in his late Philosophical Anthropology of human spirit, Paul Ricoeur develops his personalism through different approaches: from his early attempts on need and desire as the affective basis of our values to the perspective on the particular way we lead our lives in narratively constituting our personal identity, and finally to his concept of recognition. Reconstructing personalism as a philosophy of discovering the other person in her otherness and as a concept of social practice are the aims of this paper.     

Distinctions Among Stigmatized Groups1

This research investigated how individuals classify and distinguish among stigmatized groups. In Study 1, participants sorted 54 stigmas based on perceived similarity and then provided evaluations. Cluster analysis revealed 7 stigma clusters, including physical disability, mental disability, economically disadvantaged, social deviants, physical appearance, sexual identity, and racial identity. Multidimensional scaling showed that the stigmas differed on dimensions of social undesirability, controllability, and general pity. In Study 2, participants provided evaluation ratings of stigmas across 6 situations. Results confirmed the validity of the 7‐cluster solution.