An Apple Extract Beverage Combined with Caffeine Can Improve Alertness, Mental Fatigue, and Information Processing Speed

The Effect of Combined Cognitive Rehabilitation Interventions (Computer and Manual) on Improving the Information Processing Speed and Psychological Status of Women with MS

The purpose of this study was to investigate the effect of combined cognitive rehabilitation interventions (computer and manual) on improving the speed of information processing and improving the mental status variables (MMSE) in women with MS. This research was conducted with pre-test and post-test design with two month follow-up. Twenty two women with MS were selected by available sampling me...

L-theanine and caffeine improve task switching but not intersensory attention or subjective alertness.

Tea ingredients L-theanine and caffeine have repeatedly been shown to deliver unique cognitive benefits when consumed in combination. The current randomized, placebo-controlled, double-blind, cross-over study compared a combination of L-theanine (97 mg) and caffeine (40 mg) to a placebo on two attention tasks and a self-report questionnaire before, and 10 and 60 min after consumption. The combi...

general intelligence or speed of information processing?

at the beginning of the present century, problems such as education of mentally retarded children, classification and placement of job applicants in industrial and military organizations, and students selection, gave impetus to the development of intelligence tests and the formulation of theories of intelligence. for many years factorial theories of intelligence dominated the field, but piaget&...

Cognitive Flexibility, Attention and Speed of Mental Processing in Opioid and Methamphetamine Addicts in Comparison with Non-Addicts

 Introduction: Many studies have revealed that drug addicted individuals exhibit impaired performance on executive function tests but a few studies have been conducted on executive functions of drug addicts in Iran. To contribute to this understanding, the present study was designed to assess some domains related to executive functions including cognitive flexibility, attention and speed of men...

Circadian Rhythms in Fatigue, Alertness and Performance