Laboratory studies suggest that bipolar disorder is characterized by emotion dysregulation, yet emotion disturbance has not been systematically described using more ecologically valid methods. Using an experience-sampling approach, we therefore sought to investigate positive and negative emotionality, emotion regulation strategies, and functioning among remitted individuals with bipolar I disor...

The present study investigates sleep, mood, and the proposed bidirectional relationship between the two in psychiatric disorders. Participants with interepisode bipolar disorder (n = 49), insomnia (n = 34), and no psychiatric history (n = 52) completed seven consecutive days of sleep diaries and mood measures. The interepisode bipolar and insomnia participants exhibited greater sleep disturbanc...

A series of three experiments was designed to test predictions from a motivational systems approach to understanding the role of clinical constructs in anxiety-based problems. Negative mood, inflated responsibility, and intolerance of uncertainty (IU) were separately manipulated within analog samples to examine their effect on the other two factors. In the first experiment (n = 59) the negative...

Anxiety and depression are common, chronic, disabling and frequently comorbid, but many people experience barriers accessing treatment. Internet-delivered psychological treatments (iPT) have considerable potential to increase access, while transdiagnostic (TD) interventions, which aim to simultaneously treat multiple disorders, represent an emerging approach that may facilitate the treatment of...

Categorical models dominate the eating disorder field, but the tandem use of categorical and dimensional models has been proposed. A transdiagnostic dimensional model, number of lifetime eating disorder behaviors (LEDB), was examined with respect to (1) its relationship to a variety of indicators of the individual's functioning, (2) the degree to which it was influenced by genetic and environme...

BACKGROUND AND OBJECTIVES Low self-esteem (LSE) is associated with psychiatric disorder, and is distressing and debilitating in its own right. Hence, it is frequent target for treatment in cognitive behavioural interventions, yet it has rarely been the primary focus for intervention. This paper reports on a preliminary randomized controlled trial of cognitive behaviour therapy (CBT) for LSE usi...