Animals' use of landmarks and metric information to reorient: effects of the size of the experimental space

Disoriented children could use geometric information in combination with landmark information to reorient themselves in large but not in small experimental spaces. We tested fish in the same task and found that they were able to conjoin geometric and non-geometric (landmark) information to reorient themselves in both the large and the small space used. Moreover, fish proved able to reorient immediately when dislocated from a large to a small experimental space and vice versa, suggesting that they encoded the relative rather than the absolute metrics of the environment. However, fish tended to make relatively more errors based on geometric information when transfer occurred from a small to a large space, and to make relatively more errors based on landmark information when transfer occurred from a large to a small space. The hypothesis is discussed that organisms are prepared to use only distant featural information as landmarks.     

Author Index Volume 7

Authors Index

Author Index Volume 7     

Needed: A Rededication to the Counselor's Primary Commitment

The counseling aspect of the counselor's role has been eroded recently by a number of negative influences. If this erosion is not halted the counselor will not have enough time to counsel because of an overinvolvement in noncounseling activities. Counselors must focus on and preserve counseling as their primary function if the counseling profession is to have a clear identity.     

Conventionalism,scientific discovery and the sociology of knowledge*

In this paper the basic aim of the so‐called ‘strong programme’ in the sociology of knowledge is examined. The ‘strong programme’ is considered (and rightly so) as an extreme version of the anti‐realist view of science. While the problem of scientific realism has normally been dealt with from the point of view of the ‘context of justification’ of theories, the paper focuses on the issues raised by law‐discovery. In this context Herbert Simon's views about the existence of a ‘logic of scientific discovery’ are discussed and criticized. The main thesis of the paper is that if the structure of both discovery and prediction is properly understood, then the basic anti‐realist claims become untenable. A fortiori, the ‘strong programme’ appears to be unable to explain some basic features of the structure of science.     

Sonority constraints on onset-rime cohesion: evidence from native and bilingual Filipino readers of English

Research in English suggests that syllables can be analyzed in terms of two subunits-the onset (defined as the initial consonant or consonant cluster) and the rime (the unit formed by the vowel and following consonant/s). This study investigated whether nonnative readers of English, which in the case of the present study were native Filipino speakers, also make use of onset-rime units, particularly when some features of their native language (namely infixation and reduplication) appear to foster no awareness of such units. In two lexical decision experiments, monosyllabic English words were presented, divided in between their first and second consonants (e.g., B LIND), at their onset-rime boundary (e.g., BL IND), or at their antibody boundary (e.g., BLI ND). Results indicated that the processes of infixation and reduplication did not affect the English word processing of native Filipino speakers. Rather, results for both native Filipino and native English speakers suggest that onsets composed of an "s + consonant" sequence (e.g., STAMP) are less cohesive than onsets comprised of a stop-liquid sequence (e.g., BLIND). It was concluded that not only may sonority constraints underlie onset cohesiveness, but that such phonetic properties may also be involved in visual word recognition.     

Automated assessment of conditioning parameters for context and cued fear in mice

A behavioral technique often used to evaluate the cognitive performance of rats and mice is the fear conditioning paradigm. During conditioned fear experiments, freezing responses shown by rodents after exposure to environmental stimuli previously paired to an aversive experience provide a behavioral index of the animal's associative abilities. The present study examined the ability of a computer-controlled automated Freeze Monitor system for recording immobility behavior in mice. The sensitivity of the automated procedure to detect group differences caused by the application of various training protocols was also evaluated. Statistical analyses revealed significant positive correlations between immobility scores obtained with the automated apparatus and hand-scored data collected by a continuous or a time-sampling method. Behavioral patterns recorded by the computerized system were very similar to those obtained by the hand-scoring methods adopted. In particular, during context testing, exposure to environmental stimuli previously paired with a mild foot shock (unconditioned stimulus [US]) evoked increased immobility behavior in mice conditioned with the US compared with levels of immobility displayed by mice previously confined to the same contextual stimuli without receiving the US. Moreover, although during conditioned stimulus (CS) testing, mice previously exposed to the US displayed high levels of immobility when confined to environmental cues much different from those paired with the US (contextual fear generalization), both hand-scored and automated results revealed the effect of CS–US pairing (increased immobility) only in mice trained to associate the two stimuli (paired group) but not in mice exposed to both CS and US separated by a 40-sec time interval (unpaired group) or in mice receiving only the US (US group) during conditioning sessions. Overall, the results show associative conditioning measured in an automated apparatus and highlight the utility of obtaining both latency as well as beam interruption parameters.     

Memory for sequences of tone bursts in the rat: Reliance on temporal cues and evidence for an instructional ambiguity explanation of the choose-few effect

Two groups of rats were trained in a symbolic delayed matching-to-sample task with a 0-s delay to discriminate sample stimuli that consisted of sequences of tone bursts. For one group, sequences varied in number with total sequence duration controlled. For the other group, total sequence duration, sum of the tone durations, and sum of the gap durations were all controlled. The former group of rats acquired the discrimination, but the latter group of rats were not able to learn the discrimination with the additional temporal cues controlled. Retention functions for the group that acquired the discrimination exhibited a choose-many bias at the 1-s delay and a choose-few bias at the 8-s delay regardless of the similarity in the intertrial interval and delay interval illumination condition. The asymmetrical retention functions appeared to be due to instructional ambiguity which resulted from the similarity of the delay interval to temporal features of the tone burst sequence, such as the gap between tone bursts and the total duration of tone. In Experiment 2, diagnostic tests provided evidence that rats discriminated the sequences of tone bursts by timing and summing the duration of individual tone bursts rather than using an event switch to count tones. Like pigeons, rats use multiple temporal features rather than number to discriminate sequences of successive events.     

Parent–child career construction: A narrative study from a gender perspective

Nine families composed of mother and father, one son and one daughter were involved in this study to examine the role played by parents on children's career development from a gender perspective. In particular, this paper addresses the questions of how the parent–child dyad constructs stories about the child's career and the role played in it by the parent, and how same-sex dyads versus opposite-sex shape these stories. The narrative method was used as it lends itself to capturing family members storytelling about children's career. A narrative interview was administered to thirty-six participants with the data being analyzed using the adaptation of a tried-and-tested narrative analysis procedure. The findings show the importance of same-sex dyads in constructing career stories, plotted around themes of father–son educational and occupational transmission and mother–daughter alliance in facilitating girls' self-making. The study shows how storytelling helps family members to accommodate disruptions experienced during career transitions and to motivate choices that make vocational identity more stable. Implications for practice and future research are discussed.     

Spiritual Well-Being Among HIV-Infected Adolescents and Their Families

Congruence in spirituality between HIV+ adolescent (n = 40)/family (n = 40) dyads and psychological adjustment and quality of life were assessed, using the Spiritual Well-Being Scale of the Functional Assessment of Chronic Illness Therapy, Beck Depression Inventory-II, Beck Anxiety Inventory and Pediatric Quality of Life Inventory at baseline and 3-month post-intervention. Adolescents were 60 % female and 92 % African American. Congruence in spirituality between adolescent/surrogate dyads remained unchanged at 3 months. High congruence existed for “having a reason for living”; rejection of “life lacks meaning/purpose” and “HIV is a punishment from God.” Adolescents were less likely to forgive the harm others caused them than their families.