Environmental variables and releasing-valence transfer in stimulus-directed pecking of chicks

Releasing valence transfer occurs when the power or valence to release responses is transferred from a primary releasing stimulus to a second, initially neutral, stimulus. In the exemplar, pecking responses by neonatal chicks are released and directed by a pointed object operated to make pecking movements. Stimuli attached to or pecked by the arrow thereby acquire enhanced releasing valence. Chicks peck at matching stimuli in preference to comparable but unenhanced stimuli. Research reported here shows that primary and transferred releasing valences are differentially affected by environmental variables. Specific findings were Pecking by chicks occurs only within a narrow range of ambient temperature. Outside of this range, pecking is low in frequency and insensitive to valence-enhanced release. Pecking by chicks appears to be finely tuned to arrow peck rates between 120 and 180 pecks per minute. Within this range, frequency of pecks by chicks is low whereas the percentage of pecks to the valence-enhanced stimulus is maximal. The maternal food call was a weak releaser of pecking by chicks with no valence-enhancing properties.     

Serotonergic and opiate interactions in the modulation of drug- and environmental-induced analgesia in the neonatal rat pup

Serotonergic and opiate interactions in the modulation of drug- and environmental-induced analgesia were assessed in 6-day-old Sprague-Dawley-derived rat pups using tail-flick testing procedures. In these experiments the serotonergic antagonist metergoline was observed to attenuate both the analgesia induced by the opiate agonist morphine and the analgesia induced by isolation from siblings and the dam, an environmental manipulation which has previously been shown to be associated with increases in opiate activity. In contrast, the opiate antagonist naloxone was observed to be ineffective in blocking not only analgesia induced by the serotonergic agonist quipazine, but also analgesia induced by long-term deprivation from the dam and food, a manipulation that has been previously reported to induce increases in serotonergic utilization. These results suggest that in the neonate, as in the adult, the serotonergic modulation of nociception appears to occur "downstream" from the opiate systems serving to regulate nociception following both drug- and environmental-induced alterations in pain sensitivity. Analgesia induced by long-term deprivation from food and the dam appears to be strongly related to increases in serotonergic activity and relatively unaffected by opiate antagonism, whereas analgesia induced by isolation from siblings and the dam may be related to increases in opiate activity, but modulated by serotonergic systems serving to regulate pain responsivity. Thus alterations in the environment, mediated at least in part by alterations in opiate and serotonergic activity, appear to play an important role in influencing the sensitivity of the neonate to pain stimuli.     

Children's use of geometry for reorientation

Research on navigation has shown that humans and laboratory animals recover their sense of orientation primarily by detecting geometric properties of large-scale surface layouts (e.g. room shape), but the reasons for the primacy of layout geometry have not been clarified. In four experiments, we tested whether 4-year-old children reorient by the geometry of extended wall-like surfaces because such surfaces are large and perceived as stable, because they serve as barriers to vision or to locomotion, or because they form a single, connected geometric figure. Disoriented children successfully reoriented by the shape of an arena formed by surfaces that were short enough to see and step over. In contrast, children failed to reorient by the shape of an arena defined by large and stable columns or by connected lines on the floor. We conclude that preschool children's reorientation is not guided by the functional relevance of the immediate environmental properties, but rather by a specific sensitivity to the geometric properties of the extended three-dimensional surface layout.     

Effects of self-generated versus experimenter-provided cues on the representation of future events

Most experimental studies of prospection focused on episodic forms of future events prompted by means of verbal cues. However, there is evidence suggesting that future events differ considerably according to whether they are produced in response to external, experimenter-provided verbal cues or they are self-generated. In the present study, we compared the quality, the phenomenal characteristics, the temporal distribution, and the content of imagined events prompted by experimenter-provided cues (i.e., cue-words and short verbal sentences) or elicited by means of verbal cues that were self-generated in an autobiographical fluency task. The results showed that future events prompted by means of self-generated cues contained fewer event-specific details than future events prompted by experimenter-provided cues. However, future events elicited by means of self-generated and by experimenter-provided cues did not differ with respect to their phenomenal characteristics. The temporal distribution and the thematic content of future representations were also affected by the type of cue used to elicit prospection. These results offer a holistic view of the properties of future thinking and suggest that the content and the characteristics of envisioned future events may be affected by the method used to elicit prospection.     

BOOK REVIEWS

Book reviewed in this article: Sex and the College Student edited by Harrison P. Eddy. Group for the Advancement of Psychiatry. Teaching in the Slum School by Robert D. Strom. Mental Health and Achievement edited by E. Paul Torrance and Robert D. Strom. Mental Health for Students : A Guide for Adjusting to College by Arthur G. Nikelly. Annual Review of Psychology edited by Paul R. Farnsworth, Olga McNemar, and Quinn McNemar. Professionalization edited by Howard M. Vollmer and Donald L. Mills. Foundations of Behavioral Research by Fred N. Kerlinger. Fundamental Statistics in Psychology and Education by J. P. Guilford. The Changing American School edited by John I. Goodlad. 65th Yearbook, National Society for the Study of Education. Part II. Administration of Activity Therapy Service edited by Gerald S. O'Morrow. An Orientation to Chronic Disease and Disability edited by Julian S. Myers. Vacations Abroad : International Directory of Summer Courses, Study Tours, and Work Camps compiled by UNESCO. Study Abroad: International Guide to Fellowships, Scholarships, Educational Exchange compiled by UNESCO.     

Effects of morphine and naloxone upon the reactions of rats to a heat stressor

Five experiments used rats to examine the conditioned hypoalgesia induced by exposure to a heated floor. Experiments 1 and 2 demonstrated that this hypoalgesia is mediated by non-opioid mechanisms of pain control, as evidenced by insensitivity to the opioid antagonist naloxone and by the absence of cross-tolerance with the opioid agonist morphine. Although non-opioid in nature, the acquisition of conditioned hypoalgesia was facilitated by naloxone and impaired by morphine (Experiments 3 and 4). These effects did not appear to be due to an opioid regulation of pain. (1) Pairing morphine with the heated floor attenuated acquisition in drug-tolerant rats. (2) This attenuation by morphine was removed when naloxone was given after exposure to the heated floor. (3) Conditioning was facilitated when naloxone was given after exposure to the heated floor (Experiment 5). The results were discussed in terms of an opioid regulation of (a) surprise, (b) arousal of an aversive motivational system, and (c) the affective component of pain.     

Simulation and Transfer Results in Modal Logic – A Survey

This papers gives a survey of recent results about simulations of one class of modal logics by another class and of the transfer of properties of modal logics under extensions of the underlying modal language. We discuss: the transfer from normal polymodal logics to their fusions, the transfer from normal modal logics to their extensions by adding the universal modality, and the transfer from normal monomodal logics to minimal tense extensions. Likewise, we discuss simulations of normal polymodal logics by normal monomodal logics, of nominals and the difference operator by normal operators, of monotonic monomodal logics by normal bimodal logics, of polyadic normal modal logics by polymodal normal modal logics, and of intuitionistic modal logics by normal bimodal logics.     

Book Reviews

Book reviewed in this article: After the Turn On, What? by Peter S. Houts and Michael Serber. A Possible Reality by Kenneth B. Clark. The Educationally Deprived: The Potential for Change by Kenneth Clark Contemporary Field Work Practices in Rehabilitation by John G. Cull and Craig R. Colvin. Nothing Left to Lose: Studies of Street People by Jeffrey D. Blum and Judith E. Smith. Loneliness and Love by Clark E. Moustakas. Englewood Cliffs A Student Job Classification Plan for Colleges and Universities by Frank C. Adams and Clarence W. Stephens. The Job Revolution by Judson Gooding. Vocational Rehabilitation: Profession and Process edited by John G. Cull and Richard E. Hardy. Helping the Helpers to Help: The Development and Evaluation of Mental Health Consultation to Aid Clergymen in Pastoral Work by Ruth B. Caplan.     

The sound of darkness: why do auditory cues aid infants' search for objects hidden by darkness but not by visible occluders?

In manual search tasks designed to assess infants' knowledge of the object concept, why does search for objects hidden by darkness precede search for objects hidden by visible occluders by several months? A graded representations account explains this décalage by proposing that the conflicting visual input from occluders directly competes with object representations, whereas darkness merely weakens representations. This study tests the prediction that representations of objects hidden by darkness are strong enough for infants to bind auditory cues to them and support search, whereas representations of objects hidden by occluders are not. Six-and-half-month-olds were presented with audible or silent objects that remained visible, became hidden by darkness, or became hidden by a visible occluder. Search required engaging in the same means-end action in all conditions. As predicted, auditory cues increased search when objects were hidden by darkness but not when they were hidden by a visible occluder. Results are discussed in the context of different facets of object concept development highlighted by graded representations perspectives and core knowledge perspectives and in relation to other work on multimodal object representations.     

Ways of Knowing: The Creative Process and the Design of Technology

ABSTRACT This paper draws upon the already extensive epistemology of science, both to provide a yardstick of comparison for the emergent epistemology of design, and to establish some starting points from which we might begin to construct the epistemology of design.
In approaching the problem of how designers design, the paper employs Heidegger's distinction between 'know-how'and 'knowledge-that', popularised by Ryle, and shows it to be central to the distinction between the implicit processes of design employed by craft technologies, and the explicit processes employed by modern scientific technology. Borrowing from recent work by post-structuralists, it explores the nature of the phases of analysis or 'deconstruction', synthesis or construction, and evaluation, by which scientifically informed design is supposed to proceed, paying particular attention to the relationship between deconstructive analysis and constructive synthesis, in order to re-construct the creative moment/movement by which designers 'leap' from problem to solution.     

Uniform connectedness and classical Gestalt principles of perceptual grouping.

We assessed whether uniform connectedness (UC; Palmer & Rock, 1994) operates prior to effects reflecting classical principles of grouping: proximity and similarity. In Experiments 1 and 2, reaction times to discriminate global letters (H vs. E), made up of small circles, were recorded. The small circles were respectively grouped by proximity, similarity of shapes, and by UC. The discrimination of stimuli grouped by similarity was slower than those grouped by proximity, and it was speeded up by the addition of UC. However, the discrimination of stimuli grouped by proximity was unaffected by connecting the local elements. In Experiment 3, similar results occurred in a task requiring discrimination of the orientation of grouped elements, except that the discrimination of stimuli grouped by UC was faster than that of those grouped by weak proximity. Experiment 4 further showed that subjects could respond to letters composed of discriminably separate local elements as fast as to those without separated local elements. The results suggest that grouping by similarity of shapes is perceived slower than grouping by UC, but grouping by proximity can be as fast and efficient as that by UC.     

The ground is dominant in infants’ perception of relative distance

When making relative distance judgments, adults attend to information provided by the ground surface and generally ignore information provided by ceiling surfaces. In the present study, we asked whether this ground dominance effect is present in infancy. Groups of 5- and 7-month-old infants viewed a display depicting textured ground and ceiling surfaces. Two toys, which were attached to vertical rods, were affixed to the display. The toys/rods were positioned so that one toy was specified as being nearer by the ground surface but farther away by the ceiling surface, while the other toy was specified as being farther away by the ground surface but nearer by the ceiling surface. Under monocular viewing conditions, the infants in both age groups reached preferentially for the toy that was specified as being nearer by the ground surface. This effect was significantly stronger than that observed under binocular viewing conditions. The findings indicate that the infants responded to the distance information provided by the ground surface to a greater extent than to information provided by the ceiling.     

Is there None Left to Say Anything?

Abstract. Remarks made by Lutheran leaders in Africa indicate that the churches have not been responding to the crisis of the HIV/AIDS pandemic sufficiently. In this essay I ask how the churches would be better prepared to act and also, more broadly, how the churches act to begin with. The dialogue between religion and science can assist us with both tasks as we consider the challenge of HIV/AIDS as a focus for this dialogue. First, analysis by social scientists can uncover what problems face any effort to motivate churches to act—and, for that matter, any individual member of a church group. I argue, further, that we can discover the difficulties associated with producing action by religious communities by looking not at abstract theological ideas but by investigating the way those ideas are conveyed in worship. I explore the worship patterns of Lutherans to show what sort of view is actually produced by the week‐to‐week messages of liturgical texts. I contend that a different approach both to worship and to action can be produced by reconsidering our views of reality as seen through the eyes of contemporary science.     

Book Reviews

Teaching for Career Development in the Elementary School by Walter Wernick. Career Education: The New Frontier by Ralph Ressler. Pupils as Persons: Case Studies in Pupil Personnel Work by Bruce R. Amble and Richard W. Bradley. Contemporary Approaches to Interest Measurement edited by Donald G. Zytowski. Theories of Counseling and Psychotherapy by Cecil H. Patterson. School Intervention edited by William L. Claiborn and Robert Cohen. The Encounter Game by Bruce L. Maliver. The Gestalt Approach and Eye Witness to Therapy by Fritz Perls. Edited by Richard Bandler. An Introduction to Counseling: A Handbook by George D. Demos and Bruce Grant. Mental Health Care in the World of Work by Hyman J. Weiner, Sheila H. Akabas, and John J. Sommer.     

Relative and Absolute Judgments of Speech Rate from Masked and Content-Standard Stimuli The Influence of Vocal Frequency and Intensity

In two previous studies, the perception of speech rate was found to be positively related to the vocal frequency and intensity of speech. In those studies, a single sample of spontaneous, content-masked speech was used to produce nine stimuli by factorially varying three levels of each vocal frequency and intensity, while controlling the actual speech rate of the stimuli. Participants were asked to judge each stimulus, preceded by a standard, “anchoring,” stimulus as to its speech rate, pitch, loudness, and duration. The purpose of the three studies reported here was to examine the generalizability of the previous findings by using stimuli that were nonmasked and/or were not preceded by an anchoring stimulus. In each study, nine speech stimuli were prepared, as described above, and participants were asked to make judgments about the rate, pitch, loudness, and duration of each stimulus. In the first study, the stimuli were masked but were not preceded by an anchoring stimulus. In the second study, participants listened to content-standard speech stimuli preceded by an anchoring stimulus. Finally, in the third study, content-standard stimuli without an anchoring stimulus were used. In addition, studies two and three used speech segments of a male and a female speaker. The findings from the three studies replicated the central findings of the previous studies. They suggest, in other words, that rate perception of speech is indeed influenced by vocal frequency and, to some extent, by intensity, and that these relationships are not materially altered by the speakers'gender.     

Relation of career adaptability to meaning in life and connectedness among adolescents in Hong Kong

This study examined relationships among career adaptability, meaning in life, and connectedness in Hong Kong with Chinese male and female Grade 9 students (n = 543). The results indicated that presence of meaning in life positively predicted connectedness; and in the males career concern was predicted by presence of meaning in life. Also in males, career control was predicted both by presence and search for meaning in life, while career curiosity was predicted by connectedness to school, and by presence and search for meaning in life. Career confidence was predicted by connectedness to school, and presence and search of meaning in life. In the females, career concern was predicted by presence of meaning in life and connectedness to school, but negatively by connectedness to peers. Career control and career curiosity were predicted by presence and search for meaning in life. Career confidence was predicted by presence of meaning in life. Limitations of the study are identified; and implications for future research and guidance with Chinese adolescents in schools are discussed.     

REVIEWS

Book reviewed in this article:
The Hebrew Bible, the Old Testament, and Historical Criticism: Jews and Christians in Biblical Studies, by Jon D. Levenson
The Origins of Christian Morality:The First Two Centuries, by Wayne Meeks
Believing Three Ways in One God: A reading of the Apostles' Creed by Nicholas
When Women Were Priests:Women's Leadership in the Early Church and the Scandal of their Subordination in the Rise of Christianity, by Karen jo Torjesen
Judaism and Modernity: Philosophical Essays, by Gillan Rose
The One, the Three and the Many:God, Creation and the Culture of Modernity, by Colin E. Gunton
Passage to Modernity:An Essay in the Hermeneutics of Nature and Culture, by Louis Dupre
Back to the Rough Ground: 'Phronesis' and 'Techne' in Modern Philosophy and in Aristotle, by Joseph Dunne.
Kierkegaard as Negative Theologian, by David R. Law
The Hasting that Waits: Karl Barth's Ethics, by Nigel Biggar
GOD as Trinity: Relationality and temporality in Divine Life, by Ted Peters
Discipleship of Equals, by Elisabeth Schussler Fiorenza
Unleasing the Scripture: Freeing the Bible from Captivity to America, by Stanley Hauerwas
Christian Ethics: A Historical Introduction, by J.Phillip Wogaman     

Suicide method runs in families: a birth certificate cohort study of adolescent suicide in Taiwan

Suicide method used by adolescents was examined to determine if it was the same as that employed by their suicidal parents. Six hundred eighty adolescents completed suicide between 1997 and 2007, of whom 12 had parents who had previously died by suicide. The suicide method used by these adolescents was compared with that employed by their suicidal parent and that of a matched peer control adolescent with no exposure to parental suicide and living in the same area. In 10 of the 12 suicidal parent-adolescent dyads, the same suicide method was employed by parent and adolescent. Of seven adolescents whose age at parental suicide was 15 years or above, six used the same suicide method as their suicidal parent had. On the contrary, of 12 exposure-nonexposure suicidal adolescent dyads, the same method was used in only four. Adolescents exposed to parental suicide are more likely to use the suicide method employed by their suicidal parents than the method used by adolescent peers with no exposure to parental suicide.     

Consumer Well-Being (CWB): The Effects of Self-Image Congruence, Brand-Community Belongingness, Brand Loyalty, and Consumption Recency

Consumer well-being (CWB) refers to the extent to which a particular consumer good or service creates an overall perception of the quality-of-life impact of that product. We developed a model that posits that CWB related to a specific product is heavily influenced by self-image congruence and brand-community belongingness. Self-image congruence is also hypothesized to influence CWB moderated by brand loyalty. Similarly, brand-community belongingness is hypothesized to influence CWB moderated by consumption recency. Our survey data of 275 undergraduate students reporting on their coffee consumption showed the following: (1) CWB was significantly predicted by brand loyalty and brand-community belongingness; (2) the effect of brand loyalty on CWB was moderated by self-image congruence, and (3) the effect of brand-community belongingness was moderated by consumption recency.