This study sought to investigate navigational strategies across the life span, by testing 8-years old children to 80-years old healthy older adults on the 4 on 8 virtual maze (4/8VM). The 4/8VM was previously developed to assess spontaneous navigational strategies, i.e., hippocampal-dependent spatial strategies (navigation by memorizing relationships between landmarks) versus caudate nucleus-dependent response strategies (memorizing a series of left and right turns from a given starting position). With the 4/8VM, we previously demonstrated greater fMRI activity and gray matter in the hippocampus of spatial learners relative to response learners. A sample of 599 healthy participants was tested in the current study. Results showed that 84.4% of children, 46.3% of young adults, and 39.3% of older adults spontaneously used spatial strategies (p < 0.0001). Our results suggest that while children predominantly use spatial strategies, the proportion of participants using spatial strategies decreases across the life span, in favor of response strategies. Factors promoting response strategies include repetition, reward and stress. Since response strategies can result from successful repetition of a behavioral pattern, we propose that the increase in response strategies is a biological adaptive mechanism that allows for the automatization of behavior such as walking in order to free up hippocampal-dependent resources. However, the down-side of this shift from spatial to response strategies occurs if people stop building novel relationships, which occurs with repetition and routine, and thereby stop stimulating their hippocampus. Reduced fMRI activity and gray matter in the hippocampus were shown to correlate with cognitive deficits in normal aging. Therefore, these results have important implications regarding factors involved in healthy and successful aging.
Although child difficult temperament is a well‐known risk factor for parenting quality, few studies have focused on the association between specific temperament dimensions and parental behaviours. This study focused on negative emotionality, one of the best‐accepted dimensions of temperament, and its subdimensions of irritability and fearfulness. The aim of the present study was to evaluate the predictive value of irritability and fearfulness at 17 months upon parenting practices (involvement, coercion, and overprotection) at 29 months, beyond the influence of other well‐known risk factors (e.g., socio‐economic status and maternal depression). The study used data from the Quebec Longitudinal Study of Child Development, a longitudinal study conducted upon 1,829 families from Quebec (Canada), using self‐report questionnaires and medical files. Structural equation modelling identified irritability as a predictor of coercion, an externally controlling practice, whereas fearfulness predicted overprotection, an internally controlling practice. No significant associations were found after modelling between dimensions of negative emotionality and involvement. These results underline how certain aspects of child temperament may differentially “pull for control” and lead parents to act in a certain way, which may thwart young children's development and need for autonomy.
Highlights
This article investigates the associations between negative emotionality (i.e., irritability and fearfulness) and parenting (i.e., involvement, coercion, and overprotection).
Structural equation modelling was used on data collected during a longitudinal study with a representative sample of 2,223 families.
Each dimension of negative emotionality was associated to a different form of controlling parenting 1 year later (i.e., irritability with coercion and fearfulness with overprotection).
This study examined the influence of student–teacher relationships on children’s anxiety and its differential association according to children’s sex and academic achievement. The sample included 350 third- and fourth-grade students and their elementary school teachers. Results of multiple regression analysis indicated that student–teacher conflict at the beginning of the school year was associated with higher anxiety in students at the end of the year. The influence of conflict with teachers also varied for boys and girls, according to their academic achievement. Indeed, high-achieving girls reporting conflict with teachers presented more anxiety compared with boys and their low-achieving peers. This study highlights the influence of teachers on student anxiety, and brings attention to high-achieving girls, a group rarely considered at risk.
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