Definition and Conceptualization Bedtime procrastination (BTP) is defined as the voluntary failure to go to bed at the intended time, resulting in a reduction of total sleep duration, without being attributable to external circumstances. This phenomenon represents a specific form of generalized procrastination, characterized by a temporal conflict between the proximal goal of immediate gratification—such […]
Introduction to Biological Rhythms and Chronobiology Biological rhythms represent the intrinsic, self-sustaining temporal organization of physiological and behavioral processes that allow organisms to anticipate and adapt to cyclic changes in the external environment. The specialized field dedicated to the study of these temporal structures is known as chronobiology. These endogenous oscillators, which range from high-frequency […]
Conceptualizing Anxiety and Preoccupation About Sleep Anxiety and preoccupation about sleep represent a critical psychological component often underlying and perpetuating chronic insomnia, particularly the subtype known as psychophysiological insomnia. This phenomenon is characterized not merely by the objective inability to initiate or maintain sleep, but by the intense, often catastrophic, cognitive and emotional distress associated […]
Introduction to Sleep Cognitions Sleep is a fundamental biological process, yet the subjective experience and interpretation of sleep quality are profoundly influenced by cognitive factors, often termed “beliefs about sleep.” These beliefs encompass an individual’s expectations, attitudes, and assumptions regarding the necessity, fragility, and consequences of sleep. Unlike objective physiological measures, these cognitions represent the […]