Analysis of the Acquisition of Verbal Operants in a Child from 17 Months to 2 Years of Age

The Psychological Record - The purpose of this study was to longitudinally investigate the acquisition of verbal operants in a typically developing child from 17 months to 2 years of age. Verbal...     

Patterns of Attachment in Frequently and Infrequently Reading Mother—Child Dyads

This study explored the relationship between the quality of the mother–child attachment and how often mothers read to their children. Eighteen children who were read to infrequently were matched to a group of children who were read to daily, for sex, age, and socioeconomic status. The children's mothers read them a booklet, mother and child were observed in a reunion episode, the children completed the Peabody Picture Vocabulary Test (Dunn, 1965) and Frostig's (1966) test for spatial orientation, and the mothers were given the Adult Attachment Interview (George, Kaplan, & Main, 1984). The mothers in the frequently reading dyads did not need to discipline their child to focus on the reading task as often as the mothers in the infrequently reading dyads did. Mothers whose attachment to their child was less secure spent less time reading to their child and had more troublesome episodes during the reading session than mothers whose attachment to their child was more secure. The security of the mother-child attachment was related to the mothers' representation of their relationship with their parents, and mothers who had a secure relationship with their child read more frequently to their child than did mothers who had an insecure relationship with their child.     

Processes leading to confidence and accuracy in sentence recognition: A metamemory approach

We propose that memory confidence is based on the processes and products of the just-completed memory task, along with the participants’ metamemory beliefs about the relation of these processes and products to memory accuracy. We tested this metamemory approach to confidence by having participants carry out a simple recognition memory task with deceptive and nondeceptive items. The deceptive items were sentences that contained a possible synonym substitution, thus allowing errors based on gist memory. For nondeceptive items, high confidence was associated with high accuracy. For deceptive items the relationship reversed; high confidence was associated with low accuracy. A memory process questionnaire was developed that provided more differentiated phenomenal reports than the traditional know/remember distinction. For nondeceptive items, metamemory beliefs tended to be valid indicators of accuracy, but for deceptive items involving unconscious reconstructive memory processes, they tended to be invalid indicators of memory accuracy. The overall results lend strong support for our metamemory approach to memory confidence.     

Characteristics of Athletes’ Approach to the Question of Physical Health and Health Behaviors: Do Athletes Lead Healthy Lifestyles?

Athletes are people for whom physical health is a key value. Health promoting behaviors are an integral part of athletes’ success. The aim of this article is to identify health criteria and health-related behaviors among athletes and their determinants in terms of temperament and personality features. The concept of healthy lifestyle as understood by athletes and their most important health criteria were defined. Neuroticism and extraversion correlated with and were significant predictors of health behaviors; there were no significant relationships between health-promoting behaviors and temperament. Four groups of athletes, each characterized by a different approach to health, were identified. These groups were described with respect to various personality and temperamental determinants. Knowledge about the above-mentioned aspects of athletes’ performance can assist sport psychologists in providing athletes with more personalized support.     

Norms on the gender perception of role nouns in Czech,English, French,German, Italian,Norwegian, and Slovak

We collected norms on the gender stereotypicality of an extensive list of role nouns in Czech, English, French, German, Italian, Norwegian, and Slovak, to be used as a basis for the selection of stimulus materials in future studies. We present a Web-based tool (available at https://www.unifr.ch/lcg/) that we developed to collect these norms and that we expect to be useful for other researchers, as well. In essence, we provide (a) gender stereotypicality norms across a number of languages and (b) a tool to facilitate cross-language as well as cross-cultural comparisons when researchers are interested in the investigation of the impact of stereotypicality on the processing of role nouns.     

A Short Form of the Portuguese Version of the Youth Self-Report

The youth self-report (YSR), which is theoretically based in the field of developmental psychopathology and follows a dimensional approach, is an important instrument to assess the behavioral and emotional problems and the psychosocial competencies of adolescents between the ages of 11 and 18 years in both clinical and research contexts. Our main aims were to propose a short form of the YSR, conduct a first validation study, and compare the short-form YSR with the full version of the Portuguese YSR. We conducted the first study (Study 1) in a sample of 1,266 Portuguese community adolescents between the ages of 11 and 21 years to analyze the factor structure of the YSR. We conducted the second study (Study 2) in a sample of 302 community adolescents between the ages of 11 and 21 years to validate the factor structure of the short form of the YSR, which consisted of 33 items that focused on the dimensions of internalization-depression, internalization-anxiety, externalization-destructiveness and externalization-exhibitionism. Our findings confirmed that the YSR-SF provides a good fit to the data, explains similarly the variance on several criteria compared with the longer version, and is sensitive to sex and age differences.     

Behavioral and fMRI evidence that cognitive ability modulates the effect of semantic context on speech intelligibility

Text cues facilitate the perception of spoken sentences to which they are semantically related (Zekveld, Rudner, et al., 2011). In this study, semantically related and unrelated cues preceding sentences evoked more activation in middle temporal gyrus (MTG) and inferior frontal gyrus (IFG) than nonword cues, regardless of acoustic quality (speech in noise or speech in quiet). Larger verbal working memory (WM) capacity (reading span) was associated with greater intelligibility benefit obtained from related cues, with less speech-related activation in the left superior temporal gyrus and left anterior IFG, and with more activation in right medial frontal cortex for related versus unrelated cues. Better ability to comprehend masked text was associated with greater ability to disregard unrelated cues, and with more activation in left angular gyrus (AG). We conclude that individual differences in cognitive abilities are related to activation in a speech-sensitive network including left MTG, IFG and AG during cued speech perception.     

Sink positive: Linguistic experience with th substitutions influences nonnative word recognition

We used eyetracking, perceptual discrimination, and production tasks to examine the influences of perceptual similarity and linguistic experience on word recognition in nonnative (L2) speech. Eye movements to printed words were tracked while German and Dutch learners of English heard words containing one of three pronunciation variants (/t/, /s/, or /f/) of the interdental fricative /θ/. Irrespective of whether the speaker was Dutch or German, looking preferences for target words with /θ/ matched the preferences for producing /s/ variants in German speakers and /t/ variants in Dutch speakers (as determined via the production task), while a control group of English participants showed no such preferences. The perceptually most similar and most confusable /f/ variant (as determined via the discrimination task) was never preferred as a match for /θ/. These results suggest that linguistic experience with L2 pronunciations facilitates recognition of variants in an L2, with effects of frequency outweighing effects of perceptual similarity.     

Attenuated response to methamphetamine sensitization and deficits in motor learning and memory after selective deletion of β-catenin in dopamine neurons

In the present study, we analyzed mice with a targeted deletion of β-catenin in DA neurons (DA-βcat KO mice) to address the functional significance of this molecule in the shaping of synaptic responses associated with motor learning and following exposure to drugs of abuse. Relative to controls, DA-βcat KO mice showed significant deficits in their ability to form long-term memories and displayed reduced expression of methamphetamine-induced behavioral sensitization after subsequent challenge doses with this drug, suggesting that motor learning and drug-induced learning plasticity are altered in these mice. Morphological analyses showed no changes in the number or distribution of tyrosine hydroxylase-labeled neurons in the ventral midbrain. While electrochemical measurements in the striatum determined no changes in acute DA release and uptake, a small but significant decrease in DA release was detected in mutant animals after prolonged repetitive stimulation, suggesting a possible deficit in the DA neurotransmitter vesicle reserve pool. However, electron microscopy analyses did not reveal significant differences in the content of synaptic vesicles per terminal, and striatal DA levels were unchanged in DA-βcat KO animals. In contrast, striatal mRNA levels for several markers known to regulate synaptic plasticity and DA neurotransmission were altered in DA-βcat KO mice. This study demonstrates that ablation of β-catenin in DA neurons leads to alterations of motor and reward-associated memories and to adaptations of the DA neurotransmitter system and suggests that β-catenin signaling in DA neurons is required to facilitate the synaptic remodeling underlying the consolidation of long-term memories.