The role of “chirp” identification in duplex perception

Duplex perception occurs when the phonetically distinguishing transitions of a syllable are presented to one ear and the rest of the syllable (the “base”) is simultaneously presented to the other ear. Subjects report hearing both a nonspeech “chirp” and a speech syllable correctly cued by the transitions. In two experiments, we compared phonetic identification of intact syllables, duplex percepts, isolated transitions, and bases. In both experiments, subjects were able to identify the phonetic information encoded into isolated transitions in the absence of an appropriate syllabic context. Also, there was no significant difference in phonetic identification of isolated transitions and duplex percepts. Finally, in the second experiment, the category boundaries from identification of isolated transitions and duplex percepts were not significantly different from each other. However, both boundaries were statistically different from the category boundary for intact syllables. Taken together, these results suggest that listeners do not need to perceptually integrate F2 transitions or F2 and F3 transition pairs with the base in duplex perception. Rather, it appears that listeners identify the chirps as speech without reference to the base.     

Against a “mindless” account of perceptual expertise

Phenomenology and the Cognitive Sciences - According to Hubert Dreyfus’s famous claim that expertise is fundamentally “mindless,” experts in any domain perform most effectively...     

Individual differences in the vibrotactile perception of a “simple” pattern set

Discriminative capacities for vibrotactile spatiotemporal patterns were examined in 62 college students with three tasks: identification, masking, and discrimination of the letters “X” and “O” presented tactually on the Optacon, a reading machine for blind persons. Individual differences in performance and interrelations among scores within and across paradigms were explored. In identification, most persons quickly achieved consistently better than 90% performance, but others failed to identify the patterns above 80%, even after prolonged training. The same performance variance was found when the task was repeated by 23 Naval student pilots. Masking and discrimination measured susceptibility to interference when patterns followed one another closely in time. The resulting functions were typical, with poorest performance at short stimulus onset asynchronies. Again, a wide range of performance was seen. Individual performance, however, appeared to be consistent across tasks, suggesting that abilities in a variety of pattern-perception tasks might be predictable.     

The role of gradients of binocular disparity in Gibson’s theory of space perception

Adult Ss made distance bisection judgments over a surface on which the packing density of the texture elements was progressively increased along the Ss’ line of sight from one end of the surface to the other. Distance judgments were significantly different under monocular and binocular conditions of vision; however, with binocular vision, Ss did not detect the deformation in the texture on the surface. This result does not support predictions derived from Gibson, Purdy, and Lawrence (1955) concerning the role of gradients of binocular disparity in Gibson’s psychophysical theory of space perception.     

Against a “Combined Liability-Lesser-Evil Justification”

Philosophia - Jeff McMahan has recently proposed what he calls a “combined liability-lesser-evil justification.” Its core idea is that the fact that someone has no right against the...     

A cognitively-gated place? The role of need for closure in a biased perception of the place’s past

Biased memory of the past is often a starting point for intergroup conflicts. In three correlational studies, we examined the relationship between need for closure (NFC) and historical ethnocentric bias, a tendency to overestimate the role of one’s ethnic group in the multicultural history of the city of residence. In addition, we checked whether this relationship would be mediated by an individual preference for essentialist places. We found that higher NFC was related to increased historical ethnocentric bias. Moreover, this relation was mediated by preference for an essentialist type of a place. Our results may contribute to understanding the role of individual differences and preferred type of place in shaping a biased representation of the past. Furthermore, our research findings point to the importance of raising awareness of the multicultural past among high NFC individuals.

     

Memory strategies in absolute identification of “circular” pitch

Shepard (1964) has devised a sequence of synthesized tones that appear to constitute a “circular” pitch dimension; each tone in the sequence appears to be higher in pitch than the preceding one, and yet the first tone also seems higher than the last. Two series of such stimuli (a six-alternative and an eight-alternative set) were used to investigate memory processes in absolute identification performance when end stimuli are unavailable as possible anchors. Clear evidence was obtained for short-term anchoring strategies in this task, but none was obtained for the stable retention of those stimuli corresponding to the ends of the response continuum. The results are examined in the light of Eriksen and Hake’s (1957) subjective-standard hypothesis.     

What’s in a name? The role of graphics,functions, and their interrelationships in icon identification

Communication using icons is now commonplace. It is therefore important to understand the processes involved in icon comprehension and the stimulus cues that individuals utilize to facilitate identification. In this study, we examined predictors of icon identification as participants gained experience with icons over a series of learning trials. A dynamic pattern of findings emerged in which the primary predictors of identification changed as learning progressed. In early learning trials, semantic distance (the closeness of the relationship between icon and function) was the best predictor of performance, accounting for up to 55% of the variance observed, whereas familiarity with the function was more important in later trials. Other stimulus characteristics, such as our familiarity with the graphic in the icon and its concreteness, were also found to be important for icon design. The theoretical implications of these findings are discussed, with particular emphasis on the parallels with picture naming. The icon identification norms from this study may be downloaded from brm.psychonomic-journals .org/content/supplemental.     

An “outside-in” processing strategy in the perception of form

The discriminability of line segments in a number of different geometric forms was examined. The procedure used was to have one of the lines within a given form drawn thinner than the other lines. The location of the thin line varied randomly within the form, and subjects were required to detect its location. Three observations were made. First, outer line elements were discriminated more accurately than inner line elements. Second, the outer line advantage appeared to reflect an attentional strategy: By presenting inner and outer lines independently, and informing subjects in advance as to whether target lines would be in the inner or outer area of the form, the outer line advantage could be eliminated. Third, consonant with a global attentional strategy, and in opposition to any retinally tied, peripheral-to-central scanning process, an outer-line advantage was evident regardless of whether the fixation point was positioned within or outside the forms, or whether outer lines were more peripheral than inner lines.     

The role of muscle tension in “repression”

Using an active partial avoidance conditioning paradigm, muscle tension was conditioned to a verbal conditional stimulus (CS), and recall of words semantically unrelated and related to the CS was tested under conditions of three levels of induced muscle tension with 20 subjects (Ss). Results showed the expected decrease in latency of response with moderate tension for all stimuli during the pretreatment period and for the unrelated words during the posttreatment period and a significant increase in latency of response for the related words during the posttreatment period. It is suggested that if the level of muscle tension associated with the conditional response (CR) is induced in Ss, then recall of CS-related material will be inhibited or “repressed.”     

No anticipation–no action: the role of anticipation in action and perception

This paper reviews psychophysical evidence for the existence and the nature of two types of anticipation in goal-oriented action. The first one relates to attained changes of the perceptual world, thus to action goals. These anticipations determine appropriate motor output. We argue that goal codes do not only serve as a reference unit, against which currently produced behavioral effects are compared. Rather voluntary actions appear to be planned literally in terms of intended behavioral effects. The second type of anticipation relates to the environmental conditions that have to be met to bring an intended effect into being. These anticipations serve to trigger selected actions, when appropriate execution conditions are encountered. Altogether, the behavioral evidence portrays a remarkable automaticity of goal-oriented action. Once a goal exists (wherever it might come from), corresponding efferent output is generated and executed under appropriate conditions.     

The role of leadership perception as a mediator between managers’ self-monitoring and subordinate attitudes

Although the role of social cognition in leadership perception has been emphasized frequently in recent years, research using this approach in an organizational context is rare. This study investigated subordinates’ perceptions of their managers as leaders (that is, to what extent they perceive their manager as a leader) as a potential mediating factor explaining the relationship between managers’ self-monitoring and their subordinates’ attitudes toward their organizations. The study was carried out with middle-level managers (N = 64) and their subordinates (N = 210) from various business organizations in Turkey. Results indicate that subordinates’ leadership perceptions of their managers mediate the relationship between managers’ self-monitoring and their subordinates’ affective and normative organizational commitment. These results provide insight into some of the antecedents and outcomes of leadership perception.     

The preschool child's perception of adult approval in “nondirective” statements

Twenty children of nursery school age participated in a study of adult approval/ disapproval as conveyed by nondirective statements relating to play aggression. Though all sentences were tape recorded in a neutral voice, 10 of 15 conveyed disapproval in a significant proportion of judgments. All statements explicitly mentioning aggression were judged disapproving. It was concluded that nondirective play therapists must convey acceptance through other modes in order to avoid suppressing aggressive play.     

New evidence for “closure” in perception

A new criterion of perceptual grouping (Gillam, 1972), namely, that contours appear to reverse together under conditions of depth ambiguity, was used to test for the reality of “closure” and explore the parameters determining its degree. It was found that contours which would form a closed space but for a linear gap were responded to as a unit to a degree which decreased monotonically with gap size. Neither “proximal” nor “distal” gap was found to be the sole determinant of closure. Several levels of processing appear to be involved.

     

"Do I know you?" The role of significant others in general social perception

This research used an idiographic method to examine the proposition that significant others are mentally represented as well-organized person categories that can influence social perception even more than representations of nonsignificant others, stereotypes, or traits. Together, Studies 1 and 2 showed that significant-other representations are richer, more distinctive, and more cognitively accessible than the other categories. Study 3 replicated the accessibility data and gauged inferential power by indirectly activating each category in a learning trial about a fictional person and then testing recognition memory. The results showed that participants made more category-consistent false-positive errors about targets who activated significant others vs. any other category. This constitutes the first experimental demonstration of transference and has implications both for social categorization and for basic personality processes.     

Developmental changes in perceptions of attractiveness: a role of experience?

In three experiments, we traced the development of the adult pattern of judgments of attractiveness for faces that have been altered to have internal features in low, average, or high positions. Twelve-year-olds and adults demonstrated identical patterns of results: they rated faces with features in an average location as significantly more attractive than faces with either low or high features. Although both 4-year-olds and 9-year-olds rated faces with high features as least attractive, unlike adults and 12-year-olds, they rated faces with low and average features as equally attractive. Three-year-olds with high levels of peer interaction, but not those with low levels of peer interaction, chose faces with low features as significantly more attractive than those with high-placed features, possibly as a result of their increased experience with the proportions of the faces of peers. Overall, the pattern of results is consistent with the hypothesis that experience influences perceptions of attractiveness, with the proportions of the faces participants see in their everyday lives influencing their perceptions of attractiveness.     

Employees’ work effort as a function of leader group prototypicality: the moderating role of team identification

The social identity model of organizational leadership (SIMOL; Hogg and van Knippenberg, 2003 was extended analyzing the degree of employees’ effort as individual outcome of leadership effectiveness. Two studies were conducted with Italian participants. Study 1 was a survey conducted with 68 employees of a medium size company. Results showed the significant two-way interaction effect of team identification × leader group prototypicality in predicting employees’ work effort. Study 2, including 124 students, was a 2 × 2 within subject design (team identification high vs. low × leader group prototypicality high vs. low) using scenarios. Results confirmed experimentally the causal relationship between such variables: subjects in condition of high team identification and high leader group prototypicality perceive leaders as more effective than the subjects in the other three conditions.     

Students’ perception of instrumental support and effort in mathematics: the mediating role of subjective task values

Recent research shows that teacher support is predictive of student outcomes, such as engagement and effort. In this study, we explored the relation between students’ perceptions of teacher instrumental support in mathematics lessons and their effort in mathematics. We also tested whether this relation was mediated through students’ perception of the utility value, cost, and intrinsic value of mathematics. The study was designed as a cross-sectional survey. The participants included 309 9th and 10th grade Norwegian high school students. Three dimensions of mathematics task values were measured: utility value, intrinsic value, and the cost of working with mathematics. The data were analyzed by means of structural equation modeling. Instrumental support was directly and positively related to both the utility value and the intrinsic value of mathematics. However, it was only indirectly related to the perceived cost of working with mathematics, mediated by the utility value and the intrinsic value. Instrumental support was also both directly and indirectly related to effort. The indirect relation was mediated by the students’ perception of mathematics task values.