Do apes and children know what they have seen?

Chimpanzees and young children understand much about what other individuals have and have not seen. This study investigates what they understand about their own visual perception. Chimpanzees, orangutans, and 2.5-year-old children were presented with a finding game in which food or stickers were hidden in one of two or three tubes. We varied whether subjects saw the baiting of the tubes, whether subjects could see through the tubes, and whether there was a delay between baiting and presentation of the tubes to subjects. We measured not only whether subjects chose the correct tube but also, more importantly, whether they spontaneously looked into one or more of the tubes before choosing one. Most apes and children appropriately looked into the tubes before choosing one more often when they had not seen the baiting than when they had seen the baiting. In general, they used efficient search strategies more often than insufficient or excessive ones. Implications of subjects' search patterns for their understanding of seeing and knowing in the self are discussed. Accepted after revision: 7 January 2001 Electronic Publication     

An investigation of concurrent validity between two optimism/pessimism questionnaires: The life orientation test-revised and the optimism/pessimism scale

The purpose of this investigation was to investigate the concurrent validity of the Life Orientation Test-Revised (LOT-R) (Scheier et al., 1994) and Optimism/Pessimism Scale (OPS) (Dember et al., 1989) by administering each questionnaire to the same group of participants. The 154 participants (84 men and 70 women) were volunteer university students enrolled in physical activity classes at a southeastern university. The questionnaires were counterbalanced to reduce possible bias due to taking one questionnaire before taking the other. Due to recent suggestions concerning scoring mechanisms for the LOT-R (Dember et al., 1989; Hummer, Dember, Melton & Schefft, 1992; Lightsey, 1996; Marshall and Lang, 1990) the instrument was scored to produce a unidimensional score and two subscale scores. The analysis suggested that the LOTR and OPS may not be measuring similar constructs. The results revealed that the LOT-R may be measuring “trait” optimism and pessimism, while the OPS may be measuring “state” optimism and pessimism. It was also suggested that future research investigate racial differences on these constructs.     

The Client's Theory of Change: Consulting the Client in the Integrative Process

This article casts a critical eye upon the integration literature and asserts that, as in psychotherapy in general, the client has been woefully left out of the therapeutic process. An alternative that privileges the client's voice as the source of wisdom and solution is presented. It is proposed that conducting therapy within the context of the client's own theory of change offers ways of integrating multiple therapy perspectives. An argument is made for not only recasting the client as the star of the drama of therapy, but also giving the heroic client directorial control of the action as it unfolds.     

Sorokin and Parsons at Harvard: Institutional conflict and the origin of a hegemonic tradition

The early history of Harvard sociology is closely entwined with the careers and personalities of Pitirim Sorokin and Talcott Parsons. The processes and conditions that led to Parsons's rise and Sorokin's decline are essential to understanding the development of Harvard sociology. Edward Tiryakian's work on theory schools and hegemonic traditions in the social sciences is a useful framework for analyzing and discussing these developments. Following Tiryakian, one can simultaneously trace the operating factors in Sorokin's failure to achieve lasting power and the development of a Parsonian sociology which would vie for hegemony in the discipline. Personality, milieu, forms of theorizing, and sociology's movement toward maturation are keys to the major changes in Harvard sociology during the 1940s. Analysis of this case deepens understanding of the conditions that contribute to the emergence of important intellectual traditions.     

Cycloheximide blocks the retention of maternal experience in postpartum rats

Two studies were done to determine the effects of cycloheximide (CYX), a protein synthesis inhibitor, on maternal experience effects in rats. In the first study eight groups received a 2-h maternal experience 36 h after cesarean (c)-section and two groups received no post c-section experience. Among the experienced groups, two received icv injections of CYX or saline (SAL) 30 min before the maternal experience, two received CYX or SAL 10 min after the experience, and two received the injections 24 h after the experience. One inexperienced group received CYX and the other received SAL 36 h after c-section. Tests for maternal behavior occurred 10 days after c-section. CYX was not able to block or disrupt the "acquisition" or expression of ongoing maternal behavior during the 2-h experience phase. However, CYX was able to block the long-term "retention" of a 2-h maternal experience if the drug was present during or immediately after the experience, prior to "consolidation." The second study investigated the effects of CYX administered immediately after the maternal experience on the expression and retention of maternal behavior 4 and 6 days after c-section, to determine whether the hormonally mediated short-onset latencies of the 4-day group would be blocked by CYX. Eight groups of animals were tested for maternal behavior. Four were tested 4 days after c-section and four were tested 6 days after c-section. Within each of these groups two were experienced and two inexperienced; within each experience condition one group received CYX and one received SAL. Day 4 groups exhibited shorter onset latencies than Day 6 groups. There was also a CYX-SAL difference in maternal onset latencies among experienced Day 6 groups but not among Day 4 groups. These data indicate that the blocking effects of CYX can be seen only when hormonal priming of maternal behavior is no longer in evidence.     

Infants and their families at risk: Assessment and intervention

One of the basic premises of child-rearing and intervention models is that infant behavior is part of a communication system with the caregiving environment. However, infants vary in the messages that they convey to the caregiving environment, and parents vary in their ability to interpret their infants' signals and provide appropriate caregiving. This paper examines some of the tension that may exist between infant communication and appropriate caregiving. We examine research findings from several different populations of at-risk infants and their mothers in which infant signals and parental responses are variously effective in providing clues for appropriate caregiving. Some kinds of fits or matches between infant characteristics and maternal characteristics may be better than others for optimal infant development. The implications for intervention are also discussed.     

Morally Respectful Listening and its Epistemic Consequences

This paper focuses on the phenomenon of morally respectful listening. I defend a specific requirement for respectful listening in the context of disagreement. According to it, when listening occurs in the context of disagreement, the morally respectful listener must be open to the possibility that the speaker will surprise the listener with her positive epistemic qualities. That is, the listener must be open to what I call “epistemic surprise.” I also argue for a specific interpretation of this openness: to be open to epistemic surprise is to be open to unexpected changes in confidence levels concerning the proposition in question. I close by arguing that respectful listening is incompatible with a listener's being certain, and I apply this conclusion to three recent debates in epistemology to show that the phenomenon of listening has potentially far-reaching consequences for epistemology.