Self-Control as a Mediator of the Link Between Intelligence and HbA1c During Adolescence

Executive Cognitive Functions and Behavioral Control Differentially Predict HbA1c in Type 1 Diabetes across Emerging Adulthood

OBJECTIVES

To examine the contributions of two aspects of executive functioning (executive cognitive functions and behavioral control) to changes in diabetes management across emerging adulthood.

METHODS

Two hundred and forty-seven high school seniors with type 1 diabetes were assessed at baseline and followed up for 3 years. The baseline assessment battery included performance-based measures of executive cognitive functions, behavioral control, IQ estimate (IQ-est), and psychomotor speed; self-report of adherence to diabetes regimen; and glycated hemoglobin (HbA1c) assay kits as a reflection of glycemic control.

RESULTS

Linear and quadratic growth curve models were used to simultaneously examine baseline performance on four cognitive variables (executive cognitive functions, behavioral control, IQ, and psychomotor speed) as predictors of indices of diabetes management (HbA1c and adherence) across four time points. Additionally, general linear regressions examined relative contributions of each cognitive variable at individual time points. The results showed that higher behavioral control at baseline was related to lower (better) HbA1c levels across all four time points. In contrast, executive cognitive functions at baseline were related to HbA1c trajectories, accounting for increasingly more HbA1c variance over time with increasing transition to independence. IQ-est was not related to HbA1c levels or changes over time, but accounted instead for HbA1c variance at baseline (while teens were still living at home), above and beyond all other variables. Cognition was unrelated to adherence.

CONCLUSIONS

Different aspects of cognition play a different role in diabetes management at different time points during emerging adulthood years.

Problems With Self-Regulation, Family Conflict, and Glycemic Control in Adolescents Experiencing Challenges With Managing Type 1 Diabetes

Objective

This study explored the associations between problems with self-regulation and glycemic control (HbA1c) in teens experiencing challenges with managing type 1 diabetes by examining greater diabetes-related family conflict and poorer adherence as serial mediators of the link between greater problems with self-regulation and higher HbA1c.

Methods

Teens experiencing challenges with managing type 1 diabetes (n = 93, HbA1c ≥8%, 96% White, 57% male) completed an HbA1c test, and their parents completed assessments including measures of adherence and family conflict related to diabetes management during an intake for a larger Web-based intervention study or fMRI study. Teen problems with self-regulation were indexed the Child Behavior Checklist using the dysregulation profile.

Results

Bivariate correlations found significant associations between greater problems with self-regulation, greater family conflict about diabetes management, poorer adherence, and higher HbA1c. However, only greater family conflict, and not adherence, significantly explained the association between greater self-regulation problems and higher HbA1c.

Conclusions

These findings suggest that among teens experiencing challenges with managing type 1 diabetes, interventions that decrease family conflict may be critical to promoting optimal glycemic control in those teens with greater problems with self-regulation.

The Role of Cognitive and Psychosocial Maturity in Type 1 Diabetes Management

PURPOSE

The purpose of the article was to explore the longitudinal relationship between treatment responsibility and type 1 diabetes management (i.e., adherence and glycemic control) in adolescence and to examine whether indicators of cognitive and psychosocial maturity moderate the link between youth responsibility and diabetes outcomes.

METHODS

Participants included 117 youth with type 1 diabetes and their parents. Youth (aged 8-16 years) and parents were assessed five times over 2 years. Using a cohort sequential design, we estimated the growth trajectory of adherence and glycemic control (i.e., hemoglobin A1c [HbA1c]) from age 8 to 18 years. Treatment responsibility, verbal ability, and impulse control were used as predictors of within-person variability and between-person differences in the growth parameters (i.e., intercept and slope).

RESULTS

Adherence and HbA1c declined linearly from ages 8 to 18 years. Significant within-person interactions between impulse control and responsibility revealed that on occasions when youth experienced increases in both responsibility and impulse control, adherence and HbA1c were higher than would be predicted by the age-related trajectory. For adherence only, when youth acquired more responsibility, without experiencing contemporaneous gains in impulse control, adherence worsened. For glycemic control only, a significant within-person interaction indicated that time-specific increases in both youth responsibility and verbal capacity were associated with a concurrent decline in HbA1c.

CONCLUSIONS

The present findings underscore that the associations between treatment responsibility and diabetes management depend on youths' maturational context. Intervention efforts to enhance impulse control skills in youth with diabetes may prevent the decline in diabetes management that tends to occur as youth acquire more responsibility for diabetes-related tasks.

Self- and Social-Regulation in Type 1 Diabetes Management During Late Adolescence and Emerging Adulthood

PURPOSE OF REVIEW

This paper aims to examine how self-regulation (i.e., cognition, emotion) and social-regulation (i.e., parents, friends, romantic partners) are interrelated risk and protective factors for type 1 diabetes management during late adolescence and emerging adulthood.

RECENT FINDINGS

Problems in cognitive (e.g., executive function) and emotional (e.g., depressive symptoms) self-regulation are associated with poorer management, both at the between- and within-person levels. Better management occurs when parents are supportive and when individuals actively regulate the involvement of others (e.g., seek help, minimize interference). Friends both help and hinder self-regulation, while research on romantic partners is limited. Facets of self- and social-regulation are important risk and protective factors for diabetes management during emerging adulthood. At this time when relationships are changing, the social context of diabetes may need to be regulated to support diabetes management. Interventions targeting those with self-regulation problems and facilitating self- and social-regulation in daily life may be useful.

Practical strategies to enhance executive functioning and strengthen diabetes management across the lifespan

The complex type 1 diabetes (T1D) management regimen places extra demands on one's ability to plan, organize, and problem-solve, a set of skills described as executive functioning (EF). Research on the relation between EF and T1D management has been mounting and suggest that deficits in EF skills likely interfere with optimal management. However, given the substantial EF demands of T1D management, any person with T1D, including those without clinically significant deficits, could likely benefit from strategies to improve diabetes-related EF skills. The current review outlines typical EF development across the lifespan and suggests behavioral strategies (e.g., environmental modifications) from the EF literature and clinical experience to enhance EF skills at each period of development. When executive dysfunction is suspected, formal neuropsychological assessment is recommended as EF concerns can be a significant problem of their own, or they could be an indicator of another psychological disorder, such as depression or dementia.