The development of executive function in early childhood is inversely related to change in body mass index: Evidence for an energetic tradeoff?

A well‐established literature demonstrates executive function (EF) deficits in obese children and adults relative to healthy weight comparisons. EF deficits in obesity are associated with overeating and impulsive consumption of high calorie foods leading to excess weight gain and to problems with metabolic regulation and low‐grade inflammation that detrimentally affect the structure and function of prefrontal cortex. Here, we test a complementary explanation for the relation between EF and body mass index (BMI) grounded in the energy demand of the developing brain. Recent work shows that the brain accounts for a lifetime peak of 66% of resting metabolic rate in childhood and that developmental changes in brain energetics and normative changes in body weight gain are closely inversely related. This finding suggests a trade‐off in early childhood between energy used to support brain development versus energy used to support physical growth and fat deposition. To test this theorized energetic trade‐off, we analyzed data from a large longitudinal sample (N = 1,292) and found that change in EF from age 3 to 5 years, as a proxy for brain development in energetically costly prefrontal cortex, is inversely related to change in BMI from age 2 to 5 years. Greater linear decline in BMI predicted greater linear increase in EF. We interpret this finding as tentative support for a brain–body energetic trade‐off in early childhood with implications for lifetime obesity risk.     

Expertise in Deception Detection Involves Actively Prompting Diagnostic Information Rather Than Passive Behavioral Observation

In a proof‐of‐concept study, an expert obtained 100% deception‐detection accuracy over 33 interviews. Tapes of the interactions were shown to N = 136 students who obtained 79.1% accuracy (Mdn = 83.3%, mode = 100%). The findings were replicated in a second experiment with 5 different experts who collectively conducted 89 interviews. The new experts were 97.8% accurate in cheating detection and 95.5% accurate at detecting who cheated. A sample of N = 34 students watched a random sample of 36 expert interviews and obtained 93.6% accuracy. The data suggest that experts can accurately distinguish truths from lies when they are allowed to actively question a potential liar, and nonexperts can obtain high accuracy when viewing expertly questioned senders.     

The Axes of Debt: A Preface to Three Essays

This is a preface to three essays on different aspects of ontological and economic debt as themes in religious ethics. It frames their contribution by arguing that debt is central to traditions of philosophical and religious ethics yet is woefully neglected as a thematic problem and problematic in contemporary iterations of these traditions. In order to situate debt as a central moral concern, it is argued that any consideration of debt must wrestle with how debt exists on two axes. One is the axis of ontological and economic debt. The other is the axis of debt as an expression of mutuality and debt as a mode of domination. These axes generate deep ambiguities regarding the moral status of debt. But contemporary religious and philosophical ethics struggles to articulate, let alone address, this ambiguity due to being wedded to modern conceptions of the autonomous subject. The essay closes by setting out the themes of the three essays, the connections between them, and how they can be a catalyst for further reflection on this vital but under‐researched topic.     

Visual attention to emotion in depression: Facilitation and withdrawal processes

Attentional biases for sadness are integral to cognitive theories of depression, but do not emerge under all conditions. Some researchers have argued that depression is associated with delayed withdrawal from, but not facilitated initial allocation of attention toward, sadness. We compared two types of withdrawal processes in clinically depressed and non-depressed individuals: (1) withdrawal requiring overt eye movements during visual search; and (2) covert disengagement of attention in a modified cueing paradigm. We also examined initial allocation of attention towards emotion on the visual search task, allowing comparison of withdrawal and facilitation processes. As predicted, we found no evidence of facilitated attention towards sadness in depressed individuals. However, we also found no evidence of depression-linked differences in withdrawal of attention from sadness on either task, offering no support for the theory that depression is associated with withdrawal rather than initial facilitation of attention.     

Being Mindful About the Use of Mindfulness in Clinical Contexts

Over the last 10 years, interest in the use and investigation of mindfulness-based interventions in clinical settings has expanded greatly. This commentary addresses key questions facing clinicians and researchers in order to undertake future work with rigor and care. We consider, in particular, questions regarding the definition of mindfulness, the context within which mindfulness has evolved over time, including its origins as a spiritual practice, and requirements for clinicians and researchers to deliver and study mindfulness-based interventions competently. We offer suggestions for clinical practice and research, including the expansion of mindfulness-based interventions to increasingly diverse populations.