objective(s): there is controversial evidence about the effect of methamphetamine (meth) on spatial memory. we tested the time- dependent effects of meth on spatial short-term (working) and long-term (reference) memory in meth –sensitized and withdrawn rats in the morris water maze. materials and methods: rats were sensitized to meth (2 mg/kg, daily/5 days, sc). rats were trained in water maze ...

introduction : brain-based teaching is the implementation of principles and strategies derived from an understanding of the brain to enhance learning. authors in this research investigated the effects of brain-based training on learning and retention of life skills in adolescents. methods: this experimental study was designed as pre- post-test with a control group model and was conducted at the...

This study investigated the birth of a brownbanded bamboo shark Chiloscyllium punctatum at the Steinhart Aquarium. Genetic analyses suggest this is the longest documented case of sperm storage for any species of shark (45 months).

Introduction: Collaborative testing is a learning strategy thatprovides students with the opportunity to learn and practicecollaboration. This study aimed to determine the effect ofcollaborative testing on test performance and retention of coursecontent in nursing students of Shiraz University of MedicalSciences, Shiraz, Iran.Methods: This quasi-experimental study was carried out on 84students ...

Many experiments provide evidence that practicing retrieval benefits retention relative to conditions of no retrieval practice. Nearly all prior research has employed retrieval practice requiring overt responses, but a few experiments have shown that covert retrieval also produces retention advantages relative to control conditions. However, direct comparisons between overt and covert retrieval...

Retrieval of a subset of studied items and the presentation of those items as retrieval cues typically impair retrieval of the other items. Previous research on this self-limiting property of memory retrieval has relied heavily on short retention intervals and similar context between encoding and test. Here, we examined retrieval dynamics also after a prolonged retention interval with different...

The purpose of this study was to determine the effect of multimedia computer assisted instruction (MCAI), traditional instruction (TI), and combined instruction (CI) methods on learning the long jump event. Forty-eight middle school students of seventh and eighth grade were randomly assigned into three teaching method groups: MCAI, TI and CI. Each group received ten 45-min periods of instructio...