Since the introduction of Linehan's treatment manuals in 1993, dialectical behavior therapy (DBT) has been widely disseminated throughout multiple therapeutic settings and applied to a variety of diagnoses. The enthusiasm with which it was embraced by clinicians early on led some to question whether DBT's popularity was outstripping its empirical foundation. Most of the specific concerns raised regarding DBT's early empirical base have been meaningfully addressed in subsequent randomized controlled trials. This review provides a brief introduction to DBT, followed by a critical appraisal of empirical support for the treatment and a discussion of current research trends.

Background Almost nothing is known about the potential negative effects of Internet-based psychological treatments for depression. This study aims at investigating deterioration and its moderators within randomized trials on Internet-based guided self-help for adult depression, using an individual patient data meta-analyses (IPDMA) approach. Method Studies were identified through systematic searches (PubMed, PsycINFO, EMBASE, Cochrane Library). Deterioration in participants was defined as a significant symptom increase according to the reliable change index (i.e. 7.68 points in the CES-D; 7.63 points in the BDI). Two-step IPDMA procedures, with a random-effects model were used to pool data. Results A total of 18 studies (21 comparisons, 2079 participants) contributed data to the analysis. The risk for a reliable deterioration from baseline to post-treatment was significantly lower in the intervention v. control conditions (3.36 v. 7.60; relative risk 0.47, 95% confidence interval 0.29–0.75). Education moderated effects on deterioration, with patients with low education displaying a higher risk for deterioration than patients with higher education. Deterioration rates for patients with low education did not differ statistically significantly between intervention and control groups. The benefit–risk ratio for patients with low education indicated that 9.38 patients achieve a treatment response for each patient experiencing a symptom deterioration. Conclusions Internet-based guided self-help is associated with a mean reduced risk for a symptom deterioration compared to controls. Treatment and symptom progress of patients with low education should be closely monitored, as some patients might face an increased risk for symptom deterioration. Future studies should examine predictors of deterioration in patients with low education.

This study investigated the indirect effects of problematic emotion regulation on features of Borderline Personality Disorder (BPD) when accounting for negative affect in 456 participants from two distinct geographic regions. Participants completed the Affect Intensity Measure (AIM), Difficulties in Emotion Regulation Scale (DERS), the Emotion Regulation Questionnaire (ERQ), and the Borderline Symptom List (BSL). Results from this study supported a model in which there were significant indirect effects of both a lack of emotional clarity and limited access to emotion regulation strategies on features of BPD when accounting for negative affective intensity. Results also supported a second model in which there were significant indirect effects of both limited access to emotion regulation strategies and difficulties engaging in goal-directed behavior on features of BPD when accounting for negative affective reactivity. The results highlight important inter-relationships among features of BPD, difficulties regulating emotions, and negative affective intensity and reactivity.

Therapist reasoning in case formulation construction was investigated. Sixty-five psychodynamic or cognitive-behavioral therapists classified as experts, experienced, or novices generated "think aloud" formulations based on six standardized vignettes. Formulations were reliably transcribed, segmented into idea units, and content coded. ANOVA and sequential analysis compared formulation content and reasoning processes. Expert formulations contained more descriptive, diagnostic, inferential, and treatment planning information. They focused more on given and inferred symptoms, on adult relationship history, on inferred psychological mechanisms, on the need for further evaluation, and on plans to focus on treatment expectations and symptoms. They exhibited more forward (inferential) than backward (deductive) reasoning and, compared with non-experts, they exhibited more forward and backward reasoning. Results are discussed in terms of cognitive science models for expert problem solving and on implications for psychotherapy training, practice, and research.

Higher education level appears to increase the likelihood of being serene and happy, and healthy and vital, in later years; positive psychological states appeared to have both a promotion function (for vitality) and protective function (against health symptoms); self-esteem showed promise as a possible mediator of the effects of psychological states on health.