Knowledge that Transforms

Previous theories of early vision have assumed that visual search is based on simple two-dimensional aspects of an image, such as the orientation of edges and lines. It is shown here that search can also be based on three-dimensional orientation of objects in the corresponding scene, provided that these objects are simple convex blocks. Direct comparison shows that image-based and scene-based orientation are similar in their ability to facilitate search. These findings support the hypothesis that scene-based properties are represented at preattentive levels in early vision.

Conventional wisdom and previous research suggest that similarity judgments and difference judgments are inverses of one another. An exception to this rule arises when both relational similarity and attributional similarity are considered. When presented with choices that are relationally or attributionally similar to a standard, human subjects tend to pick the relationally similar choice as more similar to the standard and as more different from the standard. These results not only reinforce the general distinction between attributes and relations but also show that attributes and relations are dynamically distinct in the processes that give rise to similarity and difference judgments.

Scientific publication is a continuum, from unrefereed preprints to refereed reprints, to revisions, commentaries, and replies. All this is optimally done electronically, as "Scholarly Skywriting."

Our research shows that people can apply the cost-benefit rules of microeconomic theory to their everyday decisions. Two populations were examined: (a) people who had previously received extensive formal training in the rules and (b) naive subjects who were randomly assigned to receive brief training in the rules. Training affected reasoning and reported behavior in both populations. The results indicate that extremely general rules govern choices across a wide range of domains and that use of the cost-benefit rules can be improved through training.

The theory of emotion was a centerpiece of William James’ Principles of Psychology. It introduced the notion that complex phenomena, such as the experience of emotion, could be derived (constructed) from a combination of more basic processes or behaviors. Despite their shortcomings, James’ views on emotion shaped research on emotion for the succeeding century, and laid the groundwork for constructivist approaches in psychological theory.

One of the psychologists’ great methodological difficulties is how they can make the events they wish to study publicly observable, countable, measurable. It is significant to note that the device most often used for conversion from private to public is language. Thus speech is a crucial problem for psychology. None of their other activities gives the same sort of insight into another person as does their language. Since people spend so many of their waking hours generating and responding to words, and since speech is such a typically human mode of adjustment, no general theory of psychology will be adequate if it does not take account of language.

Musical acculturation from infancy to adulthood was studied by testing the abilities of Western 6-month-olds and adults to notice mistunings in melodies based on native Western major, native Western minor, and non-native Javanese pelog scales. Results indicated that infants were similarly able to perceive native and non-native scales. Adults, however, were generally better perceivers of native than non-native scales. These findings suggest that infants are born with an equipotentiality for the perception of scales from a variety of cultures and that subsequent culturally specific experience substantially influences music perception.

In accord with both the sympathetic magical law of similarity and the principle of nominal realism, previous research has shown that American adults have difficulty in ignoring a label indicating toxicity on a food, even though they know the label is false. This study confirms the finding, and shows that there is some reluctance to choose or consume a food entity if it is labelled explicitly as being nontoxic (a label of not sodium cyanide or not poison). Hence this type of magical thinking seems to ignore negatives.

Two university varsity swimming teams took the Attributional Style Questionnaire (ASQ) at the start of the season. Swimmers with a pessimistic explanatory style went on to show more unexpected poor performances during competition than optimistic swimmers. We then tested the purported mechanism of this effect by experimentally simulating defeat, giving each swimmer falsely negative times. Performance deteriorated for those swimmers with a pessimistic explanatory style for bad events on their next swim, whereas performance for those swimmers with an optimistic style did not.

How do people recognize an object in different orientations? One theory is that the visual system describes the object relative to a reference frame centered on the object, resulting in a representation that is invariant across orientations. Chronometric data show that this is true only when an object can be identified uniquely by the arrangement of its parts along a single dimension. When an object can only be distinguished by an arrangement of its parts along more than one dimension, people mentally rotate it to a familiar orientation. This finding suggests that the human visual reference frame is tied to egocentric coordinates.