contextual interference is defined as interference in performance and learning that arise from practicing one task in the context of other tasks. transitional practice is a kind of practice sequence that starts out with trials of large blocks; then moves to smaller random blocks, and eventually finishes with complete randomization. the aim of this study was to investigate the effect of ‘transit...

OBJECTIVE To compare students` performance, satisfaction, and retention of knowledge between a `jeopardy game format` and a `didactic lecture format` in teaching viral exanthema to fifth-year medical students. METHODS We conducted a parallel-group randomized controlled trial in the Department of Pediatrics, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia from November 2008 t...

Retention systems for implant-retained auricular prostheses using either bar-clip attachments with 2 or 3 clips or retention with 2 or 3 magnets were wear tested (insertion and removal cycles) to simulate clinical periods of use. Measurements were taken at intervals of 540 cycles, which represents a period of use of approximately 6 months, for up to 3,240 cycles. Assessments of retentive force ...

In two experiments, we examined the acquisition and retention of a letter-detection skill with a consistent-mapping procedure. In Experiment 1, subjects were trained from 0 to 4 sessions at detecting the letter H in displays containing random letters, and retesting occurred after a 1-month delay. Performance improved and in some cases became more automatic, and the performance level was maintai...

the aim of the current study was to investigate three volleyball skills in three training conditions of blocked, random and serial to reveal their effects in three phases of acquisition, retention and transfer. 60 amateur male students (mean age = 21.5 years, sd= 1.2) were voluntarily selected and randomly divided into three training groups (blocked, random and serial). a pretest was used to ma...

introduction: a limited number of studies have evaluated factors influencing the retention of fixed prostheses cemented to implant abutments. the aim of this study was to compare the effect of varying degrees of screw access channel obturation on retention of implant-supported cast fixed restorations. materials  & methods: in this experimental study, 40 implant abutments with a diameter of 4.5 ...

conclusions tattooing and longer duration of addiction were two important factors that significantly increased retention in the program. in contrast, history of using harm reduction services was the factor that decreased persistence. the risk of quitting the program may decrease about 68% in those who did not involve in harm reduction programs. patients and methods this cohort study analyzed da...

Motor-skill practice in repetitive or variable orders leads to better within-day acquisition and facilitates retention and transfer, respectively. This practice pattern effect has been robustly found for physical practice, but little is known about its effect after motor imagery (MI) practice. In the present study, we investigated the effect of constant or variable MI practice, and the consolid...

The purpose of this study was to observe the tooth colors and retention of a cosmetic veneer Fiche Pearl On containing shellac and five experimental formulations containing benzoin gum and ethyl cellulose. Tooth color was measured with a spectrophotometer before and after application of the veneers to the buccal or labial surface of experimental teeth. Through both in vitro and in vivo studies,...

UNLABELLED Captopril-stimulated renography is widely used to screen selected groups of hypertensive patients for renal vascular disease. Evaluation of the test is a complex task. Lack of interobserver agreement on the assessment and interpretation of renographic parameters may contribute to differences in sensitivity and specificity between studies. METHODS Three experienced nuclear medicine ...