Another look at impulsivity: Could impulsive behavior be strategic?

Trait impulsivity is associated with an increased risk of type 2 diabetes incidence in adults over 8 years of follow-up: results from the NutriNet-Santé cohort

BACKGROUND

Type 2 diabetes is one of the most prevalent and preventable diseases worldwide and impulsivity, a psychological trait characterized by making quick decisions without forethought, has been suggested as a key feature for health-related conditions. However, there have been no studies examining the relationships between impulsivity and the incidence of type 2 diabetes and our aim was to assess the prospective association between trait impulsivity and the risk of developing type 2 diabetes.

METHODS

A prospective observational study design was conducted between May 2014 and February 2023 within the NutriNet-Santé cohort. A web-based platform was used to collect data from the French adult population, with voluntary enrollment and participation. Of the 157,591 adults (≥ 18 years old) participating in the NutriNet-Santé study when impulsivity was assessed, 109,214 participants were excluded due to prevalent type 1 or 2 diabetes or missing data for impulsivity or follow-up data for type 2 diabetes. Trait impulsivity, and the attention, motor, and non-planning subfactors, were assessed at baseline using the Barratt Impulsiveness Scale 11. Incident type 2 diabetes was ascertained through follow-up. Medical information was reviewed by NutriNet-Santé physician experts to ascertain incident diabetes cases based on the ICD-10. Cox regression models, using hazard ratios and 95% confidence intervals (HR [95% CI]), were performed to evaluate associations between impulsivity per 1 standard deviation increment and type 2 diabetes risk, adjusting by recognized confounders.

RESULTS

Of the 48,377 individuals studied (women 77.6%; age at baseline = 50.6 year ± 14.5 years), 556 individuals developed type 2 diabetes over a median follow-up of 7.78 (IQR: 3.97-8.49) years. Baseline impulsivity was associated with an increased risk of type 2 diabetes incidence (HR = 1.10 [1.02, 1.20]). The motor impulsivity subfactor was positively associated with type 2 diabetes risk (HR = 1.14 [1.04, 1.24]), whereas no associations were found for attention and non-planning impulsivity subfactors.

CONCLUSIONS

Trait impulsivity was associated with an increased type 2 diabetes risk, mainly driven by the motor impulsivity subfactor. If these results are replicated in other populations and settings, trait impulsivity may become an important psychological risk factor to be considered in the prevention of type 2 diabetes.

COHORT REGISTRATION

Name of registry: The NutriNet-Santé Study. A Web-based Prospective Cohort Study of the Relationship Between Nutrition and Health and of Dietary Patterns and Nutritional Status Predictors. Cohort registration number: NCT03335644. Date of registration: October 11, 2017. URL: https://clinicaltrials.gov/ct2/show/NCT03335644.

Environmental uncertainty and the advantage of impulsive choice strategies

Choice impulsivity is characterized by the choice of immediate, smaller reward options over future, larger reward options, and is often thought to be associated with negative life outcomes. However, some environments make future rewards more uncertain, and in these environments impulsive choices can be beneficial. Here we examined the conditions under which impulsive vs. non-impulsive decision strategies would be advantageous. We used Markov Decision Processes (MDPs) to model three common decision-making tasks: Temporal Discounting, Information Sampling, and an Explore-Exploit task. We manipulated environmental variables to create circumstances where future outcomes were relatively uncertain. We then manipulated the discount factor of an MDP agent, which affects the value of immediate versus future rewards, to model impulsive and non-impulsive behavior. This allowed us to examine the performance of impulsive and non-impulsive agents in more or less predictable environments. In Temporal Discounting, we manipulated the transition probability to delayed rewards and found that the agent with the lower discount factor (i.e. the impulsive agent) collected more average reward than the agent with a higher discount factor (the non-impulsive agent) by selecting immediate reward options when the probability of receiving the future reward was low. In the Information Sampling task, we manipulated the amount of information obtained with each sample. When sampling led to small information gains, the impulsive MDP agent collected more average reward than the non-impulsive agent. Third, in the Explore-Exploit task, we manipulated the substitution rate for novel options. When the substitution rate was high, the impulsive agent again performed better than the non-impulsive agent, as it explored the novel options less and instead exploited options with known reward values. The results of these analyses show that impulsivity can be advantageous in environments that are unexpectedly uncertain.

Hedonic Consumption in Times of Stress: Reaping the Emotional Benefits Without the Self-Regulatory Cost

Hedonic consumption is pleasant but can interfere with the capacity to self-regulate. In stressful moments, when self-regulation is arguably still important, individuals often indulge in hedonic consumption. In two experiments, we investigate whether hedonic consumption negatively affects self-regulation under moderately stressful conditions and whether selecting hedonic consumption under moderately stressful conditions is driven by high or low self-control. In both studies, participants were randomly exposed to a mental arithmetic task that was either completed under time pressure with performance feedback (moderate stress) or without time pressure and without feedback (no stress). Experiment 1 assigned participants to a hedonic (vs. neutral) consumption task and then measured impulse control via a color-word Stroop task. Experiment 2 measured self-control as a second independent variable and recorded hedonic (vs. neutral) consumption. The results show that moderate stress buffered the negative effect that hedonic consumption has on self-regulation under no stress conditions and that high rather than low self-control predicts hedonic over neutral consumption under stress. These findings indicate that hedonic consumption in response to moderate stress may be a strategic choice to reap the pleasure benefit of hedonic consumption while the costs to self-regulation are low.

When impulsive behaviours do not equal self-control failures: the (added) value of temptation enactments

Most work on self-control and impulsivity typically assumes, more or less tacitly, that people value self-control as more important than succumbing to temptations. According to this narrative, people regard impulsive behaviours as ‘failures’ of self-control and experience negative self-evaluations such as feelings of guilt or shame in response. Here, we direct attention to a neglected but crucial meta-behavioural valuation dimension of impulsive behaviour. We posit that individual differences in people's valuation of temptation enactment (VOTE) qualify whether and to what extent impulsive behaviours trigger negative self-evaluations and whether and to what extent people feel motivated to self-improve. Using a newly constructed VOTE scale, we first show that individual differences in VOTE can be reliably measured and clearly distinguished from traditional impulsivity or self-control scales (Studies 1–3; total N = 576). Across three subsequent studies (total N = 460), we then demonstrate that high VOTE, as compared with low VOTE, reduces the link between impulsive behaviours and negative self-conscious emotions (Studies 4 and 5), as well as between past impulsive behaviour and self-improvement motivation (Study 6). These findings have implications for the discourse on self-control failure and for the link between impulsive behaviour and self-evaluation, self-improvement motivation, and well-being.

Emotion regulation interacts with gambling motives to predict problem gambling among emerging adults

BACKGROUND

It is presently estimated that as much as 10% of emerging adults are at risk for a gambling disorder. The consequences stemming from problematic gambling engagement include increased substance use, mental health disorders, suicidality, financial strain and legal issues. The present study explores whether deficits in specific dimensions of emotion regulation coupled with the motivation to escape negative emotions (i.e., coping motives) increases the likelihood of problem gambling severity, while controlling for variables such as gambling frequency, age, and sex.

METHODS

A sample of 919 emerging adult gamblers (M_age = 21.16 years-old, SD = 2.90, 48.1% female) completed an online survey including an assessment of problematic engagement in gambling over the past year, gambling motivations, and difficulties in emotion regulation. In total, 15.2% and 8.1% of this sample were at moderate or high risk for gambling disorder.

RESULTS

A series of six moderation analyses revealed that the total models accounted for approximately 37-38% of the variance in problem gambling and that coping motives interacted with less difficulties engaging in goal-directed behavior, increased lack of emotional clarity, and increased lack of emotional awareness to create a toxic mixture for problem gambling.

CONCLUSIONS

These findings reveal the importance of considering both psychological factors such as emotion regulation and motivational factors in understanding who is at greatest risk for gambling problems.

On How Definitions of Habits Can Complicate Habit Research

The core message of this paper is that many of the challenges of habit research can be traced back to the presence of causal elements within the definition of habits. For instance, the idea that habits are stimulus-driven implies that habitual behavior is not causally mediated by goal-representations. The presence of these causal elements in the definition of habits leads to difficulties in establishing empirically whether behavior is habitual. Some of these elements can also impoverish theoretical thinking about the mechanisms underlying habitual behavior. I argue that habit research would benefit from eliminating any reference to specific S-R association formation theories from the definition of habits. Which causal elements are retained in the definition of habits depends on the goals of researchers. However, regardless of the definition that is selected, it is good to be aware of the implications of the definition of habits for empirical and theoretical research on habits.

Impulsivity and compulsivity are differentially associated with automaticity and routine on the Creature of Habit Scale

Habits may develop when meaningful action patterns are frequently repeated in a stable environment. We measured the differing tendencies of people to form habits in a population sample of n = 533 using the Creature of Habit Scale (COHS). We confirmed the high reliability of the two latent factors measured by the COHS, automaticity and routines. Whilst automatic behaviours are triggered by context and do not serve a particular purpose or goal, routines often have purpose, and because they have been performed so often in a given context, they become automatic only after their action sequence has been activated. We found that both types of habitual behaviours are influenced by the frequency of their occurrence and they are differentially influenced by personality traits. Compulsive personality is associated with an increase in both aspects of habitual tendency, whereas impulsivity is linked with increased automaticity, but reduced routine behaviours. Our findings provide further evidence that the COHS is a useful tool for understanding habitual tendencies in the general population and may inform the development of therapeutic strategies that capitalise on functional habits and help to treat dysfunctional ones.

Emotion regulation in emerging adult gamblers and its mediating role with depressive symptomology

BACKGROUND

It is presently estimated that as much as 10% of emerging adults are at risk for a gambling disorder. The consequences stemming from problematic gambling engagement include increased substance use, mental health disorders, suicidality, financial strain and legal issues. The present study explores whether deficits in emotion regulation explain the association between problem gambling severity and depression.

METHODS

A sample of 820 emerging adult gamblers (M_age = 21.14 years-old, SD = 2.90, 50.9% female) completed an online survey including an assessment of problematic engagement in gambling over the past year, levels of anxious/depressive symptomology, and difficulties in emotion regulation. In total, 15.6% and 8.2% of this sample were at moderate or high risk for gambling disorder.

RESULTS

Results from a linear regression model revealed that difficulties with impulse control positively contributed to problem gambling scores and engagement in goal-directed behavior positively contributed to problem gambling scores, even after accounting for symptoms of depression. Moreover, results from a mediation model revealed that the association between problem gambling and depression was explained by participants' deficits in non-acceptance, goals, strategies, and clarity.

LIMITATIONS

Limitations include the use of self-report and cross-sectional data making it difficult to infer causality.

CONCLUSIONS

These findings add to our understanding of the mechanisms that appear to explain for the first time the affective consequences of problem gambling. Enhancing specific dimensions of emotion regulation will allow for tailored interventions among gamblers with depression, ultimately achieving better mental health outcomes.

Moving Beyond System 1 and System 2

It is generally assumed that relational knowledge is the foundation of higher cognition such as (analogical and conditional) reasoning, language, the use of relational categories, and planning. Dual-system models (e.g., Kahneman, 2011) that divide the realm of cognition into two systems with opposing properties (e.g., fast vs. slow, intentional vs. unintentional, conscious vs. unconscious, associative vs. propositional) foster the view that other psychological phenomena are not relational in nature. In this paper, I argue that the impact of relational knowledge is more widespread than dual-system models imply. More specifically, I review evidence suggesting that also Pavlovian conditioning, implicit evaluation, and habitual responding are mediated by relational knowledge. Considering the idea that relational knowledge underlies also fast, unintentional, unconscious, and seemingly associative psychological phenomena is not only theoretically important but also reveals new opportunities for influencing thinking and behavior.