Processing interactions and lexical access during word recognition in continuous speech

The interactions, during word-recognition in continuous speech, between the bottom-up analyses of the input and different forms of internally generated top-down constraint, were investigated using a shadowing task and a mispronunciation detection task (in the detection task the subject saw a text of the original passage as he listened to it). The listener's dependence on bottom-up analyses in the shadowing task, as measured by the number of fluent restorations of mispronounced words, was found to vary as a function of the syllable position of the mispronunciation within the word and of the contextual constraints on the word as a whole. In the detection task only syllable position effects were obtained. The results, discussed in conjunction with earlier research, were found to be inconsistent with either the logogen model of word-recognition or an autonomous search model. Instead, an active direct access model is proposed, in which top-down processing constraints interact directly with bottom-up information to produce the primary lexical interpretation of the acoustic-phonetic input.     

Adjective check list descriptions of Freud and Jung

Summary: Personality characteristics of Freud and Jung were assessed by 17 members of a psychology class familiar with biographical and autobiographical material of these subjects by means of Gough's Adjective Check List, Terms used in describing the men and ACL profiles scored on composite lists were consistent with expectation, Blind interpretation of profiles by the test author accorded with knowledge of the subjects. On special scales for "intellectence" and "origence" the subjects fell high on both dimensions which is typical of creative persons.     

Effects of pattern orientation and number of symmetry axes on the detection of mirror symmetry in dot and solid patterns

It has been postulated that as the number of axes of symmetry in a pattern increases, so pattern 'goodness' increases. Recently, a distinction was made between two different theoretical accounts of regularity or 'goodness' in relation to patterns with mirror symmetry: the 'transformational' and the 'holographic' models. It was argued that the former predicts a 'goodness' ordering of four > three > two > one whereas the latter predicts four > two > three > one, where '>' means greater regularity or goodness. In three experiments, we have tested these predictions. In experiment 1, we measured percentage correct and reaction time to dot patterns which had one, two, three, or four axes of symmetry and were flashed for 150 ms. Experiment 2 was identical except that patterns were presented for 2000 ms. In experiment 3, dot patterns were replaced by solid shapes which also had one, two, three, or four axes of symmetry. Although it was found that stimuli with four axes clearly allowed superior performance to that of stimuli with one axis, results obtained with stimuli with two and three axes were almost identical and in between those obtained with one and four axes. The data thus support the suggestion that extra axes add 'goodness' to symmetrical patterns but not in a monotonic fashion.     

Towers of Hanoi and London: is the nonshared variance due to differences in task administration?

Although it has been assumed that the Tower of Hanoi and Tower of London are more or less interchangeable tasks dependent on executive function, a series of studies in our laboratory have indicated substantial nonshared variance between the performances on the two tasks. The purpose of the present study was to examine how much methods of administration, such as number of trials per problem, contribute to this nonshared variance. A new one-trial version of the Tower of Hanoi was developed to be identical to the Tower of London in four procedural characteristics. The one-trial version of the Tower of Hanoi was administered to 39 normal adults along with the traditional Tower of Hanoi and the Tower of London-Revised in two test sessions 5-7 weeks apart. The correlations between the two tasks were in the same range as found previously with the traditional task, indicating that administration differences do not account for the nonshared variance between the tasks. A reliability analysis of the one-trial tasks showed poor internal consistency. Also, the internal consistency of the 6-trial tower was artificially inflated by aspects of the administration and scoring procedures. Moreover, this task exhibited a ceiling effect on repeated testing. These results suggest that it would be of value to redesign the one-trial Tower of Hanoi systematically to increase its reliability and, potentially, its validity as a measure of executive functions.     

Within- and between-nervous-system inhibition of return: Observation is as good as performance

Inhibition of return (IOR) has been shown to occur when an individual returns to a target location (within-person IOR) and when an individual moves to a location just engaged by another individual (between-person IOR). Although within- and between-person IOR likely result from the same inhibitory mechanisms, different processes must activate these mechanisms following the performance and observation of action. Consistent with the suggestion that the mirror neuron system may be responsible for activating the inhibitory mechanisms behind IOR on observation trials, between-person IOR was only detected under restricted viewing conditions known to activate mirror neurons. These results indicate that mirror neuron system may be involved in both higher-order and automatic cognitive behavior.     

Movement trajectories in the presence of a distracting stimulus: Evidence for a response activation model of selective reaching

Consistent with action-based theories of attention, the presence of a nontarget stimulus in the environment has been shown to alter the characteristics of goal-directed movements. Specifically, it has been reported that movement trajectories veer away from (Howard & Tipper, 1997) or towards (Welsh, Elliott, & Weeks, 1999) the location of a nontarget stimulus. The purpose of the experiments reported in this paper was to test a response activation model of selective reaching conceived to account for these variable results. In agreement with the model, the trajectory changes in the movements appear to be determined by the activation levels of each competing response at the moment of response initiation. The results of the present work, as well as those of previous studies, are discussed within the framework of the model of response activation.     

Eye movements may cause motor contagion effects

When a person executes a movement, the movement is more errorful while observing another person’s actions that are incongruent rather than congruent with the executed action. This effect is known as “motor contagion”. Accounts of this effect are often grounded in simulation mechanisms: increased movement error emerges because the motor codes associated with observed actions compete with motor codes of the goal action. It is also possible, however, that the increased movement error is linked to eye movements that are executed simultaneously with the hand movement because oculomotor and manual-motor systems are highly interconnected. In the present study, participants performed a motor contagion task in which they executed horizontal arm movements while observing a model making either vertical (incongruent) or horizontal (congruent) movements under three conditions: no instruction, maintain central fixation, or track the model’s hand with the eyes. A significant motor contagion-like effect was only found in the ‘track’ condition. Thus, ‘motor contagion’ in the present task may be an artifact of simultaneously executed incongruent eye movements. These data are discussed in the context of stimulation and associative learning theories, and raise eye movements as a critical methodological consideration for future work on motor contagion.     

A reputation for success (or failure): the association of peer academic reputations with academic self-concept, effort, and performance across the upper elementary grades

The associations between children's academic reputations among peers and their academic self-concept, effort, and performance were examined in a longitudinal study of 427 students initially enrolled in Grades 3, 4, and 5. Assessments were completed in the fall and spring of 2 consecutive school years and in the fall of a 3rd school year. Peer academic reputation (PAR) correlated moderately strongly with teacher-rated skills and changed over time as a function of grades earned at the prior assessment. Path-analytic models indicated bidirectional associations between PAR and academic self-concept, teacher-rated academic effort, and grade point average. There was little evidence that changes in self-concept mediated the association between PAR and effort and GPA or that changes in effort mediated the association between PAR and GPA. Results suggest that peers may possess unique information about classmates' academic functioning, that children's PARs are psychologically meaningful, and that these reputations may serve as a useful marker of processes that forecast future academic engagement and performance.     

Discouraging unethicality versus encouraging ethicality: Unraveling the differential effects of prevention‐ and promotion‐focused ethical leadership

Theory on the impact of ethical leadership has traditionally been based on a deontological approach to morality. Underlying this perspective is the assumption that all leader behaviors that encourage “normatively appropriate conduct” will influence followers in a similar fashion. Put differently, the current consensus seems to suggest that actions that focus on preventing unethical behavior—attending to “the wrong”—will have the same impact as actions that focus on promoting ethical behavior—attending to “the right.” Taking a within‐person approach, we draw upon social exchange theory to challenge this consensus and build theory that suggests a follower's felt trust from their leader will be differentially impacted by prevention‐ versus promotion‐focused ethical leadership. We also explore how these different types of ethical leadership may indirectly, through felt trust, impact citizenship behavior and counterproductive work behavior. Finally, we consider how the role of the “moral manager” may interact with the “moral person” by identifying leader moral hypocrisy as an important between‐person moderator of these effects. Given the importance of ethical decision‐making in organizations and the calls for increased ethical leadership, our findings have important implications for both theory and practice.