3 experiments varying the interval between 2 presentations of paired associates were reported. Other pairs filled the spacing and retention intervals. Pairs consisting of a word and a number as well as pairs consisting of 2 words showed a superiority at 8 sec. and longer retention intervals when presentations were spaced. Increasing the spacing interval beyond 8 sec. did not increase recall, wh...

Although grade retention may be consequential for a number of important educational and socioeconomic outcomes, we know surprisingly little about the actual rate at which students are made to repeat grades. We build on Hauser, Frederick, and Andrew's (2007) measure of grade retention using data from the 1995 through 2010 Current Population Surveys. We make technical improvements to their measur...

BACKGROUND Mucous retention cyst refers to a cyst made by expansion due to the blockage of the salivary gland near the maxillary sinus, and it is surrounded by epithelial cells. Most of them are small; therefore, they cannot be found well and are frequently with antral polyp. The aim of this study was to evaluate the clinical prognosis of sinus bone graft in patients with mucous retention cyst....

OBJECTIVES To determine the effects of prolonged ventilation tube retention on tympanic membrane healing and the efficacy of patching procedures used concomitantly at the time of tube removal. DESIGN Retrospective chart review. SETTING Tertiary referral academic institution. PATIENTS Seventy-six patients aged 12 years and younger, with a total of 99 ears identified from January 1989 to De...

Urinary retention is complex and may present in various ways as a result of a myriad of pathologic processes. Retention is>10 times more common in men than in women, and acute urinary retention (AUR) is rare in younger men; men in their 70 s are at five times more risk of AUR than men in their 40 s. Most of the epidemiologic data referred to in the literature are for AUR; data for chronic urina...

I . The effect of hexoestrol on calcium metabolism of wether lambs has been studied 5 weeks after implantation of the oestrogen by the use o f 4 T a combined with a balance technique. 2. Treatment resulted in significant increases in gain in body-weight, efficiency of food utilization and retention of Ca. 3. The increased retention of Ca resulted from an increase in the efficiency of absorption...

Forgetting functions were generated for pigeons in a delayed matching-to-sample task, in which accuracy decreased with increasing retention-interval duration. In baseline training with dark retention intervals, accuracy was high overall. Illumination of the experimental chamber by a houselight during the retention interval impaired performance accuracy by increasing the rate of forgetting. In n...

OBJECTIVE Long-term retention of pit and fissure sealants is crucial for their success. This clinical study evaluated the retention rate of a flowable composite resin (Filtek Supreme XT Flowable Restorative) compared to a conventional resin-based sealant (Concise Light Cure White Sealant) over 12 months. MATERIALS AND METHODS Forty subjects aged 6 to 9 years were included in the study. Using ...

OBJECTIVE This study evaluated the risks and outcomes of capsule retention during capsule endoscopy (CE) for investigating small bowel disease. Capsule retention is the most serious complication of CE. METHODS Before CE, the gastrointestinal tract was evaluated for blockages with computerized tomography. Analysis of CE was made retrospectively. RESULTS Capsule endoscopy was used to investig...