"Economic man" in cross-cultural perspective: behavioral experiments in 15 small-scale societies

Researchers from across the social sciences have found consistent deviations from the predictions of the canonical model of self-interest in hundreds of experiments from around the world. This research, however, cannot determine whether the uniformity results from universal patterns of human behavior or from the limited cultural variation available among the university students used in virtually all prior experimental work. To address this, we undertook a cross-cultural study of behavior in ultimatum, public goods, and dictator games in a range of small-scale societies exhibiting a wide variety of economic and cultural conditions. We found, first, that the canonical model - based on self-interest - fails in all of the societies studied. Second, our data reveal substantially more behavioral variability across social groups than has been found in previous research. Third, group-level differences in economic organization and the structure of social interactions explain a substantial portion of the behavioral variation across societies: the higher the degree of market integration and the higher the payoffs to cooperation in everyday life, the greater the level of prosociality expressed in experimental games. Fourth, the available individual-level economic and demographic variables do not consistently explain game behavior, either within or across groups. Fifth, in many cases experimental play appears to reflect the common interactional patterns of everyday life.     

Organizational citizenship behavior and workplace deviance: the role of affect and cognitions

To investigate the role of affect and cognitions in predicting organizational citizenship behavior (OCB) and workplace deviance behavior (WDB), data were collected from 149 registered nurses and their coworkers. Job affect was associated more strongly than were job cognitions with OCB directed at individuals, whereas job cognitions correlated more strongly than did job affect with OCB directed at the organization. With respect to WDB, job cognitions played a more important role in prediction when job affect was represented by 2 general mood variables (positive and negative affect). When discrete emotions were used to represent job affect, however, job affect played as important a role as job cognition variables, strongly suggesting the importance of considering discrete emotions in job affect research.     

Limb and gender differences in the development of coordination in early infancy

Young infants produce a variety of spontaneous arm and leg movements in the first few months of life. Coordination of leg joints has been extensively investigated, whereas arm joint coordination has mainly been investigated in the sitting position in the context of early reaching and grasping. The current study investigated arm and leg joint coordination of movements produced in the supine position in 10 fullterm infants aged 6, 12 and 18 weeks. Longitudinal comparisons within limbs (intralimb) as well as between limbs (interlimb, ipsilateral and contralateral) were made as well as an exploration of differences in the development for boys and girls. The relationship between the joint angles was examined by measuring pair-wise cross-correlation functions for the angular displacement curves of the leg (hip, knee and ankle) and arm (shoulder, elbow and wrist) joints of both the right and left side. Both the arms and legs were found to follow a similar pattern of intralimb coordination, although the leg joints were more tightly coupled than the arm joints, particularly the proximal with the middle joint. In support of earlier findings, differences in the development of the right and left side were identified. In addition, gender differences in joint coordination were found for both intralimb and interlimb coordination. This contrasts with the view that gender differences in motor development may be primarily a result of environmental influences.     

Discourse as Care: A Phenomenological Consideration of Spatiality and Temporality

Scholars increasingly recognize that discourse is not a standing collection of representations for pre-existing thoughts and/or things in a pre-existing world. Still, many obstacles remain, and these seem to be inseparable from contemporary common-sense. When we ask about the nature of discourse, we are, ultimately, asking about the nature of world, the nature of the body, and also, there must be, if only tacitly, an account of space and time. Discourse, I would suggest, is a mode of evaluative praxis, a way of articulately being-concerned-with-others. But discourse is not only a finely nuanced praxis, or a sophisticated mode of cooperative action. Its powers for spatializing and temporalizing include predication in their peculiar kind of care. In general, as implying a concernful -being-with-others-being-toward-world, discourse is an intentional nexus whose capacities for spatializing and temporalizing make-room for those situations in which we find ourselves thrown, projected, and concernfully stretching along.     

The dynamics of threat and challenge appraisals prior to stressful achievement events

Research on cognitive appraisal of stressful achievement events has emphasized threat appraisals and anxiety. The present research also focused on challenge and positive emotion. Study 1 used hypothetical scenarios of stressful events. Study 2 explored temporal pattems of appraisal and emotion prior to an exam. Compared with threat appraisals, trait and state challenge appraisals were associated with more confident coping expectancies, lower perceptions of threat, higher positive emotion, and more beneficial perceptions of the effects of appraisal and emotion on performance. Beneficial perceptions of state appraisals were associated with higher exam performance. These findings were interpreted in the context of theoretical perspectives on the cognitive appraisal of stressful events and the adaptive functions of challenge and positive emotion.     

Extinction of conditioned odor potentiation of startle

Several recent studies with rats (Sprague-Dawley strain) have documented that an odor previously paired with shock potentiates the acoustic startle response, a phenomenon referred to as conditioned odor potentiation of startle (OPS). A surprising finding in these studies was that OPS did not extinguish even though the odor was present throughout the 25-min test session. Therefore, the present study more fully examined extinction of OPS. The results of Experiment 1, which employed both within-subject and between-group comparisons, showed that extinction of OPS occurred in adult rats only after several days of testing. Experiment 2 used the between-group procedure and found similar results with 23-day-old rats, the youngest age that exhibits the OPS effect. Experiment 2 also showed that giving rats 15 odor-shock pairings at 16 days of age, an age where they acquire the odor-shock association but cannot express it via OPS, does not increase subsequent resistance to extinction following odor-shock pairings at 23 days of age. Taken together, the results of this study show that (1) although OPS is somewhat resistant to extinction, it does extinguish with repeated tests and (2) suggests that there are no age differences in the rate of extinction of OPS.     

Screening for Depression After Stroke: Occupational Therapists' Performance to Protocols

The ability of occupational therapists to enact post-stroke depression screening protocols was considered. The medical notes of 12 patients admitted to an in-patient stroke unit over a 3-month period were consulted to assess timely, appropriate administration, interpretation, and recording of the results of administering the protocols. Post-stroke depression screening by occupational therapists occurred for 83% of patients. Of the screens conducted, all of the patients were administered the correct tool. In 100% of cases screened, the outcome was recorded and in at least 80% clinicians had provided feedback to the patient on the results of the screen.     

Relationship Commitment and Perceptions of Harm to Self

Commitment to a relationship is associated with a number of consequences, including willingness to sacrifice for the relationship, greater cognitive interdependence between partners, and increased trust in one's partner. Consistent with such consequences, we hypothesized that greater commitment is associated with decreased perceptions of one's partner as a source of harm to the self. We conducted two studies (one correlational, one experimental) to test hypotheses regarding the association between commitment level and personal harm perceptions, based on tenets from interdependence theory and balance theory. Study 1 revealed significant negative associations between commitment and personal harm perceptions. Results from Study 2 suggest that greater commitment leads to decreased perceptions of partner-based risk and increased risky behavioral tendencies.     

Conduction-electron mediated 1H nuclear spin-lattice relaxation in Ti45Zr38Ni17H x icosahedral quasicrystals

Nuclear magnetic resonance spin-lattice relaxation rates for ¹H in quasicrystalline Ti₄₅Zr₃₈Ni₁₇H _x are presented as a function of temperature and hydrogen concentration x. The temperature dependence demonstrates that the relaxation is via interaction with conduction electrons. The relaxation rate is extremely sensitive to hydrogen content, with the rate changing by a factor of as much as two for samples that differ in x