Link to this article: http://journals.cambridge.org/abstract_S1866980800000764How to cite this article: Jeannette M. Stein and Wendelyn J. Shore (2012). What do we know when we claim to know nothing? Partial knowledge of word meanings may be ontological, but not hierarchical . AbstractTwo studies investigated whether knowledge about ontological category membership exists early in the word learning process -specifically, when words are partially known -and if so, how such knowledge is represented. Participants made decisions about the ontological category membership of words at three levels of knowledge: words they correctly defined (known), words recognized as familiar ( frontier), and words mistakenly identified as nonwords (u nknown). Accuracy on this task improved as a function of word level. Participants were able to identify the broad ontological categories to which words at all three levels of knowledge belonged, as well as the more specific ontological categories to which the words belonged. Overall, results indicated that knowledge about ontological category membership is available for words at very low levels of knowledge, and that this knowledge does not necessarily follow the strict hierarchical organization some ontological systems are thought to embody (e.g. Keil 1979). Implications for the acquisition and representation of word meanings are discussed.

Changing how information is framed, such that the same critical information is cast in a positive or negative light, has a powerful impact on judgements and decision making. Research indicates that the influence of frames may be driven by participants' initial affective response and that the right hemisphere is sensitive to the emotional connotation of stimuli. While previous research tested the effects of hemispheric differences on framing effects by inducing asymmetrical activation, the current study explored how stable brain differences may account for differences in susceptibility to framing effects. Because mixed degree of handedness is associated with increased access to right hemisphere processes, mixed-handed participants were expected to be more susceptible to the effects of framing than strong-handed participants. Participants responded to the Asian disease problem and completed as assessment of handedness. Although mixed- and strong-handed participants were affected differently, the results were not consistent with the hypothesis. Mixed-handed participants conformed to risky choice framing effects when options were framed negatively and showed no effect of the positive frame. Strong-handed participants conformed to positively framed options and showed no effect of the negative frame. Possible explanations are discussed.

Do women have a recall advantage for what others say? And does it matter what type of information another person shares with them? Women’s greater interdependence in self-construal was predicted to give them an advantage over men in their memory for information shared about close others. In an experimental study, 124 undergraduate students (64 women and 60 men) from a Midwestern university in the United States watched either a videotaped male or female target discussing his or her lifestyle habits, health goals, and family. Participants then completed a surprise recognition test of their memory for what the target had said. Results show men were as accurate as women at remembering personal information shared by the targets, but women more accurately recalled what was said about the targets’ family members. The implications of these findings for various professional relationships are discussed.

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