Self-control mediates the link between gender and academic achievement in sex-stereotyped school subjects in elementary and in higher secondary schools

Maternal Psychological Aggression, Problem Behaviors, and the Mediating Roles of Psychological Resilience and Self-Control in Preschoolers

Objective

This study examines the relationship between maternal psychological aggression (PA) and preschoolers' problem behaviors (PB), focusing on the mediating roles of psychological resilience (PR) and self-control (SC), and gender differences.

Methods

Mothers of 1141 preschoolers (52.9% boys, 47.1% girls; Mage = 4.26, SD = 0.85) participated in three waves of a longitudinal survey, each two months apart. Mothers participating in this study reported basic demographic information and PA at T1. PR and SC were reported at T2. PB of preschoolers was reported at T3. Path analysis models were employed to ascertain the relationship between PA and PB, as well as the mediating roles of PR and SC. Multiple group analyses were employed to ascertain the moderating role of gender.

Results

Maternal PA (T1) was positively associated with preschoolers' PB (T3) (β=0.220, p<0.001). PR (T2) and SC (T2) independently and sequentially mediated the relationship between maternal PA (T1) and preschoolers' PB (T3). Maternal PA (T1) was negatively associated with preschoolers' PR (T2) only in boys (β =-0.155, p<0.001), not in girls (β =-0.030, p>0.05).

Conclusion

This study reveals the impact and underlying mechanisms of maternal PA on preschoolers' PB and highlights gender differences. These findings underscore the importance of protective factors in fostering positive adaptive behaviors in children subjected to maternal PA. Interventions should focus on preventing maternal PA and enhancing children's PR and SC, particularly in boys, to promote healthy and positive behaviors.

The effect of trait self-control on dyspnoea and tolerance to a CO2 rebreathing challenge in healthy males and females

BACKGROUND

High trait self-control is associated with greater tolerance of unpleasant sensations including effort and pain. Dyspnoea and pain have several commonalities and this study aimed to investigate for the first time whether trait self-control influences responses to a hypercapnic rebreathing challenge designed to induce dyspnoea. As sex also influences tolerance to dyspnoea, we also sought to investigate whether this moderated the role of trait self-control.

METHODS

Participants (n = 65, 32 females) scoring high or low for trait self-control, performed a standardised rebreathing challenge, in which inspired carbon dioxide (CO₂) gradually increased over a period of 6 min or until an intolerable level of dyspnoea. Air hunger (AH) intensity - a distinctive quality of dyspnoea, was measured every 30 s. The multidimensional dyspnoea profile (MDP) was completed after the rebreathing challenge for a more complete overview of breathing discomfort.

RESULTS

Males high in trait self-control (SCHIGH) (302 ± 42 s), tolerated the rebreathing challenge for longer than males low in self-control (SCLOW) (252 ± 66 s, P = 0.021), experienced slower increases in AH intensity during the rebreathing challenge (0.03 ± 0.01 cm^.s ^- 1 vs. 0.04 ± 0.01 cm^.s ^- 1,P = 0.045) and reported lower perceived mental effort on the MDP (4.94 ± 2.46 vs. 7.06 ± 1.60, P = 0.007). There was no difference between SCHIGH and SCLOW females for challenge duration. However, SCHIGH females (9.29 ± 0.66 cm) reported greater air hunger at the end of the challenge than SCLOW females (7.75 ± 1.75 cm, P = 0.003). It is possible that SCLOW females were unwilling to tolerate the same perceptual intensity of AH as the SCHIGH females.

CONCLUSIONS

These results indicate that individuals high in trait self-control are more tolerant of dyspnoea during a CO₂ rebreathing challenge than low self-control individuals. Tolerance of the stimulus was moderated by the sex of the participant, presenting an interesting opportunity for future research.