Dewey Between the Lines: George Kelly and the Pragmatist Tradition

In his own somewhat sly and sardonic way, George Kelly always insisted that personal construct theory could not be assimilated into any other kind of psychology. We believe this was not an example of Kelly being difficult or protecting his turf, but that he resisted such efforts at categorization because he formulated personal construct psychology from an entirely different set of assumptions than those which have traditionally guided the construction of psychological theories. We begin by looking at the unusual life path Kelly took in order to enter the field of psychology and what it reveals about the independent turn of mind he brought to creating his own theory of personality. We then examine what we believe is the single most important influence on Kelly's thinking—the tradition of American pragmatism, in general, and the philosophy and psychology of John Dewey, in particular. We argue that Kelly embraced the pragmatic epistemological assumptions that guided Dewey's work, and that he used these assumptions to develop the only pragmatic theory of personality and psychotherapy. It is, in fact, the influence of Dewey and the pragmatists that makes personal construct psychology so different from and, at times, more difficult to understand than other, more traditional, “realist” theories, but it is also this pragmatic orientation that makes Kelly's theory such an important contribution.     

Emotional responses to intergroup apology mediate intergroup forgiveness and retribution

According to intergroup emotion theory, the impact of many intergroup events on intergroup outcomes is mediated by group-directed emotions. We demonstrate that the ability of apology to reduce retribution against and increase forgiveness of a transgressing outgroup is contributed to by discrete intergroup emotions. We examined both negative (anger and fear) and positive (respect and satisfaction) emotions directed toward the transgressing outgroup. Apology reduced the desire for retribution whereas lack of apology increased it, and outgroup-directed anger uniquely mediated this effect. In contrast, apology increased and lack of apology decreased forgiveness, particularly when the ingroup responded to the transgression, and only outgroup-directed respect mediated this effect. These results provide the first evidence that intergroup emotions can mediate the impact of apology on intergroup relations outcomes.     

Investigating the modality specificity of response selection using a temporal flanker task

The neurocognitive architecture for response selection is uncertain. Some theorists suggest that it is mediated by an amodal central mechanism, whereas others propose a set of independent control mechanisms. In a functional neuroimaging experiment, we investigated the nature of response selection by examining how its underlying brain mechanisms are affected by stimulus modality. To do this, we used a modified flanker task, in which the target and flanker (distractor) stimuli differed in time rather than space, making it accessible for both visual and auditory stimuli. As in the traditional flanker task, larger reaction times were observed for incongruent than congruent trials (i.e., a congruency effect) for both modalities. Congruency affected brain activation for both modalities in prefrontal cortex, parietal cortex, and the putamen. Modality-dependent activation was found in additional prefrontal and parietal regions for the visual modality and in left inferior prefrontal cortex for the auditory modality. Modality-dependent activity specifically related to response congruency was also found in sensory cortical regions. These data suggest that modality affects the brain regions throughout the cortex mediating response selection even for conceptually identical stimuli and tasks. They are consistent with the hypothesis that (at least partially) independent brain networks mediate response selection and that input modality may be a powerful factor for organizing neural activity to support task performance.     

Bimanual cross-talk during reaching movements is primarily related to response selection,not the specification of motor parameters

Simultaneous reaching movements made with the two hands can show a considerable increase in reaction time (RT) when they differ in terms of direction or extent, compared to when the movements involve the same direction and extent. This cost has been attributed to cross-talk in the specification of the motor parameters for the two hands. However, a recent study [Diedrichsen, Hazeltine, Kennerley, & Ivry, (2001). Psychological Science, 12, 493-498] indicates that when reaching movements are cued by the onset of the target endpoint, no compatibility effects are observed. To determine why directly cued movements are immune from interference, we varied the stimulus onset asynchrony for the two movements and used different combinations of directly cued and symbolically cued movements. In two experiments, compatibility effects were only observed when both movements were symbolically cued. No difference was found between compatible and incompatible movements when both movements were directly cued or when one was directly cued and the other was symbolically cued. These results indicate that interference is not related to the specification of movement parameters but instead emerges from processes associated with response selection. Moreover, the data suggest that cross-talk, when present, primarily shortens the RT of the second movement on compatible trials rather than lengthening this RT on incompatible trials.     

An exploratory study of undergraduates' attributions of success or failure on spatial tests

Seven spatial tests from the CTY Spatial Test Battery and four subscales of an attribution scale were administered to 23 female and 28 male undergraduates. Three hypotheses were tested. The seven spatial tests and three of the attribution subscales were found reliable; sex differences were found for the spatial tests but not the attribution scales; and subjects' attributions did not predict spatial performance.     

Rapid long lasting learning in a collinear edge-detection task

We have developed a detection task in which subjects identify a pair of collinear edges in a field of polygons. Five of our six subjects showed significant, rapid learning at this task. Four showed evidence of retention a day and a week later. In several transfer tests, we found that disruption of the distractors produced a significant drop-off in performance. These results are consistent with a model in which collinear targets initially produce a salience signal too weak to be reliably detected over the noise of the distractors. As the experiment proceeds, the visual system learns to dampen the distractor signals, allowing for more reliable detection.     

About spatial intelligence: I

Spatial intelligence is characterized in terms of a continuum of research perspectives which range from a physiological or sensory awareness to a complex thought and cultural emphasis.     

Configural response learning: the acquisition of a nonpredictive motor skill

This study examined the representational nature of configural response learning using a task that required simultaneous keypresses with 2 or 3 fingers, similar to the production of chords on the piano. If the benefits of learning are related to the retrieval of individual stimulus-response mappings, performance should depend on the frequencies of the individual responses forming each chord. Alternatively, learning may involve the encoding of configural information concerning the relationship between the chord elements. In Experiment 1, training was restricted to a subset of the 120 possible 3-element chords. Probe blocks included the practiced chords, chords composed of novel configurations of practiced elements (reconfigured), and chords that contained a new element (new). Practiced chords were performed faster than reconfigured chords, indicating learning involves the encoding of configural information. Experiment 2 showed that learning was not restricted to configurations within each hand. Experiments 3 and 4 demonstrated that learning was largely response based.     

Conceptualization of task boundaries preserves implicit sequence learning under dual-task conditions

Implicit learning in the serial reaction time (SRT) task is sometimes disrupted by the presence of a secondary distractor task (e.g., Schumacher & Schwarb Journal of Experimental Psychology: General 138:270–290, 2009) and at other times is not (e.g., Cohen, Ivry, & Keele Journal of Experimental Psychology: Learning, Memory, and Cognition 16:17–30, 1990). In the present study, we used an instructional manipulation to investigate how participants’ conceptualizations of the task affect sequence learning under dual-task conditions. Two experimental groups differed only in terms of the instructions and presequence training. One group was instructed that they were completing two separate tasks, whereas the other group was instructed that they were performing a single, integrated task. The separate group showed sequence learning, while the integrated group did not. These findings suggest that the conceptualization of task boundaries affects the availability of the sequential information necessary for implicit learning.