EARSHOT: A Minimal Neural Network Model of Incremental Human Speech Recognition

Despite the lack of invariance problem (the many-to-many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side-stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real-world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two-layer network that borrows one element from ASR, long short-term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human-like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR.     

Psychometric and Validity Issues in Machine Learning Approaches to Personality Assessment: A Focus on Social Media Text Mining

In the age of big data, substantial research is now moving toward using digital footprints like social media text data to assess personality. Nevertheless, there are concerns and questions regarding the psychometric and validity evidence of such approaches. We seek to address this issue by focusing on social media text data and (i) conducting a review of psychometric validation efforts in social media text mining (SMTM) for personality assessment and discussing additional work that needs to be done; (ii) considering additional validity issues from the standpoint of reference (i.e. ‘ground truth’) and causality (i.e. how personality determines variations in scores derived from SMTM); and (iii) discussing the unique issues of generalizability when validating SMTM for personality assessment across different social media platforms and populations. In doing so, we explicate the key validity and validation issues that need to be considered as a field to advance SMTM for personality assessment, and, more generally, machine learning personality assessment methods. © 2020 European Association of Personality Psychology     

Actions speak louder than words: Differences in memory flexibility between monolingual and bilingual 18‐month‐olds

Bilingual infants from 6‐ to 24‐months of age are more likely to generalize, flexibly reproducing actions on novel objects significantly more often than age‐matched monolingual infants are. In the current study, we examine whether the addition of novel verbal labels enhances memory generalization in a perceptually complex imitation task. We hypothesized that labels would provide an additional retrieval cue and aid memory generalization for bilingual infants. Specifically, we hypothesized that bilinguals might be more likely than monolinguals to map multiple perceptual features onto a novel label and therefore show enhanced generalization. Eighty‐seven 18‐month‐old monolingual and bilingual infants were randomly assigned to one of two experimental conditions or a baseline control condition. In the experimental conditions, either no label or a novel label was added during demonstration and again at the beginning of the test session. After a 24‐hr delay, infants were tested with the same stimulus set to test cued recall and with a perceptually different but functionally equivalent stimulus set to test memory generalization. Bilinguals performed significantly above baseline on both cued recall and memory generalization in both experimental conditions, whereas monolinguals performed significantly above baseline only on cued recall in both experimental conditions. These findings show a difference between monolinguals and bilinguals in memory generalization and suggest that generalization differences between groups may arise from visual perceptual processing rather than linguistic processing. A video abstract of this article can be viewed at https://youtu.be/yXB4pM3fF2k     

Situational antecedents of children's anger experiences and subsequent responses to adult versus peer provokers

The purpose of this study was to examine children's reported experiences of anger and their means of expressing anger in their interactions with high versus equal status individuals. Parents and teachers represented high status while siblings and peers represented equal status. Sixth grade children were asked to cite situations in which they experience anger in interaction with peers versus adults and to indicate their typical responses to these situations. We identified 13 categories of situations in which anger was experienced and 11 categories of response to these situations. Anger was experienced in interaction with both high and equal status provokers but of the situations that were identified as producing experiences of anger, nine were reported as occurring differentially in interaction with adults versus peers of the responses to the experience of anger, seven responses were cited differentially in interaction with peers versus adults. The typical responses to adult provoked anger were generally more passive than those to peer provoked anger. Girls more than boys indicated experiencing anger due to adult's task demands but tended to express less overt anger in their interactions with adults than did boys. These findings are consistent with the view that high status of the provoker servers only to inhibit the expression of anger but does not lessen the anger experience itself.     

Parting gifts: termination rituals in group therapy

A patient's termination from group therapy is a powerful experience for the departing patient, the therapist, and all group members. Unless the feelings evoked are channeled into constructive expression, they may undermine this potentially valuable phase of both the departing patient's group treatment and the life of the group as a whole. A termination ritual, styled by a particular patient according to his or her own need, therapy goals, and personality may help the patient achieve a more clearly defined sense of self. The authors suggest that the group therapist's careful attunement to and thorough exploration of the significance of any termination ritual or gift will help to extract maximum therapeutic benefit for the departing member and the group as a whole.     

Two-year-olds' search strategies and visual tracking in a hidden displacement task

Children younger than 3 years have difficulty with search tasks that involve hidden displacement. Partial visual information was provided about a ball's path as it moved toward a hiding place. Children (2.0 and 2.5 years old) saw a ball rolling down a ramp placed behind a transparent screen with 4 opaque doors. A wall, placed on the ramp and directly behind 1 of the doors, protruded above the screen and stopped the ball. Children were asked to find the ball. The transparency of the screen permitted visual tracking of the ball between the doors, but its final resting place was obscured. Both age groups were equally proficient at tracking the ball as it rolled behind the screen, but the 2.5-year-olds were more likely to reach to the correct door. Looking behavior was related to errors in the younger group in that tracking that stopped short or continued past the correct door was associated with incorrect choices.     

Dimensions of depression and perfectionism in pregnant and nonpregnant women: their levels and interrelationships and their relationship to marital satisfaction

The authors studied S. J. Blatt's (1974) 2 dimensions of depression (anaclitic and introjective), P. L. Hewitt and G. L. Flett's (1991b) 3 dimensions of perfectionism (socially prescribed, self-oriented, and other-oriented), and the relationship between these and marital satisfaction in 100 married women in the last trimester of their first pregnancy and in 50 married women who had not yet experienced pregnancy. The measures used were the Depressive Experiences Questionnaire (S. J. Blatt, J. P. D'Afflitti, & D. M. Quinlan. 1976a, 1976b), the Multidimensional Perfectionism Scale (P. L. Hewitt & G. L. Flett, 1989), and G. B. Spanier's (1976) Dyadic Adjustment Scale. Pregnant and nonpregnant women did not differ in anaclitic depression, but the level of introjective depression of pregnant women was lower than that of nonpregnant women. The two groups did not differ in level of marital satisfaction or in any of the dimensions of perfectionism. For both groups, introjective depression was positively correlated with socially prescribed perfectionism and negatively correlated with marital satisfaction. Self-oriented perfectionism was positively related to introjective depression and negatively related to marital satisfaction for nonpregnant women. For the pregnant women, there was a negative relationship between socially prescribed perfectionism and marital satisfaction. Anaclitic depression and other-oriented perfectionism were unrelated to any of the other variables studied.     

Anxiety-related bias in the classification of emotionally ambiguous facial expressions

High- and low-trait socially anxious individuals classified the emotional expressions of photographic quality continua of interpolated ("morphed") facial images that were derived from combining 6 basic prototype emotional expressions to various degrees, with the 2 adjacent emotions arranged in an emotion hexagon. When fear was 1 of the 2 component emotions, the high-trait group displayed enhanced sensitivity for fear. In a 2nd experiment where a mood manipulation was incorporated, again, the high-trait group exhibited enhanced sensitivity for fear. The low-trait group was sensitive for happiness in the control condition. The mood-manipulated group had increased sensitivity for anger expressions, and trait anxiety did not moderate these effects. Interpretations of the results related to the classification of fearful expressions are discussed.