PubMed · 13833191
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
F G SPEAR. 1960. Deterioration in schizophrenic control groups.. https://doi.org/10.1111/j.2044-8341.1960.tb01235.x
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
This study investigated the emotion regulation hypothesis of trichotillomania (TTM) using a retrospective self-report measure and an experimental hair-pulling task. Participants diagnosed with TTM (n=34) and nonclinical control (NC) volunteers (n=32) were compared on ratings of emotional experiences associated with hair pulling. Data from the retrospective self-report measure supported the emotion regulation hypothesis of TTM. The TTM group reported larger decreases than the NC participants in boredom, sadness, anger, and tension, and larger increases in relief and calm from before to during pulling. The TTM group also reported significantly higher ratings of pleasure while pulling. When exploring changes in emotions from during to after pulling, the TTM group reported larger increases than the NC participants in guilt, sadness, and anger; and larger decreases in boredom; while the NC group reported larger increases than the TTM group in happiness, calm, and relief. On the experimental hair-pulling task, the TTM group reported larger decreases in anxiety from before to after pulling, but this effect was only found for a nontypical hair-pulling site. Methodological limitations may account for the lack of group differences on the experimental hair-pulling task.
The aim of this study was to evaluate the sealing ability of 3 obturation techniques in oval canals using a bacterial leakage model. Seventy mandibular incisors with oval canals were selected after buccolingual and mesiodistal radiographs, and divided into three groups. After instrumentation, the canals were obturated respectively by lateral condensation (G1), warm vertical condensation (G2) and Thermafil (G3). Five root canals were not obturated and served as positive controls; five teeth with intact crowns served as negative controls. All teeth were mounted on a 2 chamber apparatus and then exposed to human saliva. The number of days required for the entire contamination of the root canals was recorded, observing the turbidity of the BHI broth, for a period of 100 days. 84.21% of the samples from the lateral condensation group (G1); 84.21% of the samples from the warm vertical condensation group (G2); and 89.47% of the samples from the Thermafil System group (G3) showed no contamination at the end of the study. No statistical significant difference was found among the three techniques. The quality of the apical seal in the three techniques tested was similar.
The randomized clinical trial is used in hypertension research as a primary mode for evaluating new, promising therapies. Herein, the authors provide an overview of design features of clinical trials, particularly those useful for designing a hypertension therapeutic clinical trial.