Unity and diversity of views on intelligence and consciousness: Where the East meets the West

Intelligence is a cognitive function. Cognitive processing is a common base for cognitive theories of intelligence in both the East (India) and in the West (Europe and America). I first review the Eastern view of intelligence and its relation to consciousness. I argue that the study of consciousness has been accepted in Western psychology as a legitimate topic since William James, then present further discussion on the topic from Hindu and Buddhist philosophies. In essence, it is about awareness and the means of achieving a pure state of awareness through self-directed attention to internal thoughts, rather than external objects. The validity of a first-person observation of consciousness then becomes an important issue as well as the question of a non-physical mind. The paper concludes that using introspective reflection as a tool to explore consciousness is supported by both views.     

Reliability and construct validity of the Dutch psychopathy checklist: youth version: findings from a sample of male adolescents in a juvenile justice treatment institution

The present study examines the reliability and construct validity of the Dutch version of the Psychopathy Check List: Youth Version (PCL:YV) in a sample of male adolescents admitted to a secure juvenile justice treatment institution (N = 98). Hare's four-factor model is used to examine reliability and validity of the separate dimensions of psychopathy. Interrater reliabilities are good to excellent for the PCL:YV total score and most factor scores, except for the affective factor. Several suggestions are offered for optimizing reliability of this factor. Finally, meaningful associations between PCL:YV scores and scores on the Minnesota Multiphasic Personality Inventory-Adolescent and the Interpersonal Checklist-Revised support the construct validity of the PCL:YV total score as well as the four factors in the Dutch context.     

Heart rate, recall, and reaction-time measures of levels of processing

A problem of circularity emerges in any attempt to index depth by retention alone. In the present study, reaction time (RT), and heart-rate response were used to index the three qualitatively distinct levels of physical, phonemic, and semantic processing. An additional objective was to distinguish between the three levels under incidental vs intentional learning conditions. Subjects were 46 male undergraduates who were given 30 trials. A trial consisted of the presentation of an orienting question and an imperative word-stimulus separated by a 6-sec. interval. There were three types of questions in order to induce processing to one of the three target levels. The results indicated that recall as well as heart-rate acceleration distinguished between two (physical vs phonemic and semantic) rather than three levels of processing in the incidental condition. Heart-rate change differentiated between incidental and intentional, the intentional condition showing a smaller change. Semantic and phonemic RTs were faster than physical RT, but there were no differences between semantic and phonemic RTs. Intentional recall was superior to incidental recall. It is suggested that psychophysiological indices can provide independent evidence for 'levels of processing.'     

Central synaptic mechanisms underlie short-term olfactory habituation in Drosophila larvae

Naive Drosophila larvae show vigorous chemotaxis toward many odorants including ethyl acetate (EA). Chemotaxis toward EA is substantially reduced after a 5-min pre-exposure to the odorant and recovers with a half-time of ～20 min. An analogous behavioral decrement can be induced without odorant-receptor activation through channelrhodopsin-based, direct photoexcitation of odorant sensory neurons (OSNs). The neural mechanism of short-term habituation (STH) requires the (1) rutabaga adenylate cyclase; (2) transmitter release from predominantly GABAergic local interneurons (LNs); (3) GABA-A receptor function in projection neurons (PNs) that receive excitatory inputs from OSNs; and (4) NMDA-receptor function in PNs. These features of STH cannot be explained by simple sensory adaptation and, instead, point to plasticity of olfactory synapses in the antennal lobe as the underlying mechanism. Our observations suggest a model in which NMDAR-dependent depression of the OSN-PN synapse and/or NMDAR-dependent facilitation of inhibitory transmission from LNs to PNs contributes substantially to short-term habituation.     

Fragment difficulty in priming on word-completion tests

Word-fragment completion is a frequently used test in implicit memory research. In this test priming is the relevant variable. Priming is obtained by subtracting the proportion of nonstudied word fragments correctly completed (called "completion difficulty baseline") from the studied word fragments correctly completed. Since completion difficulty can spuriously vary greatly between experimental conditions, its effect on magnitude of priming is studied. Normative frequency of occurrence of target words was considered because their influence over performance is known. In an experiment using a word-fragment completion test, participants' completion of fragments at three levels of completion difficulty and two levels of frequency was tested. Analysis showed that completion difficulty had a significant effect on global priming. The priming magnitude was higher for Difficult and Moderately Difficult fragments than for Easy ones. An interaction between fragment difficulty and normative word frequency was observed. When the fragments were easy to complete, the expected effect of higher priming for low-frequency words than for high-frequency words was not observed.     

Gender Roles and Cultural Continuity in the Asian Indian Immigrant Community in the U.S.

Ethnic identity is a part of positive self-concept that consciously anchors an individual to a particular ethnic group. Central to this identity is a sense of belonging, as well as a commitment to the group's values, beliefs, behaviors, conventions, and customs. This study focuses on the Asian Indian community in the U.S. to investigate their concerns with the continuity of ethnic identity via maintenance of traditional culture. Intergenerational synchrony in two specific values, attitudes toward women and dating, were examined as indicators of successful transmission of culture and identity. Forty-sixeducated, middle class Indian immigrant families, the majority of whom were foreign born and Hindus,participated in this study by responding to three questionnaires: Attitude Toward Women Scale, Dating Scale, and IPAT Anxiety Scale. Although the results show a strong similarity between parents and children on target attitudes, distinct intergenerational and gender asymmetries emerged. The conscious attempt to preserve certain critical attitudes, values, and behaviors characteristic of the group was labeled “judicious biculturalism,” an expression of active involvement on the immigrants' part to control the course of their own acculturation. The study has implications for women's status within the Asian Indian community.     

Fear appeals motivate acceptance of action recommendations: evidence for a positive bias in the processing of persuasive messages

Three experiments are reported that tested the hypothesis that the use of fear appeals in health persuasion may lead to positively biased systematic processing of a subsequent action recommendation aimed at reducing the health threat and, consequently, to more persuasion, regardless of the quality of the arguments in the recommendation. The levels of participants' vulnerability to as well as the severity of a health risk were varied independently, followed by a manipulation of the quality of the arguments in the subsequent action recommendation. The dependent variables included measures of persuasion (attitude, intention, and action), negative affect, and cognitive responses. The results show that participants who felt vulnerable to the health threat were more persuaded, experienced more negative emotions, and had more favorable cognitive responses. Both negative emotions concerning one's vulnerability and positive thoughts concerning the recommendation mediated the effects of vulnerability on persuasion.     

Uterine Transplant: A Risk to Life or a Chance for Life?

Science and Engineering Ethics - Being inherently different from any other lifesaving organ transplant, uterine transplantation does not aim at saving lives but supporting the possibility to...