Since the discovery that amnesiacs retained certain forms of unconscious learning and memory, implicit memory research has grown immensely over the past several decades. This review discusses two of the most intriguing questions in implicit memory research: how we think it works and why it is important to human behaviour. Using priming as an example, this paper surveys how historic behavioural studies have revealed how implicit memory differs from explicit memory.

Pediatric obesity is considered a major public health problem in the United States today. Because excess body fat is associated with various health risks, clinicians and researchers have been investigating effective ways to reduce the incidence of pediatric obesity. To identify at-risk individuals, the U.S. health care community encourages the use of Body Mass Index (BMI),defined as weight/height2 (kg/m2),to classify children and adolescents into different health risk categories, including overweight and obese. However, the scientific validity of using BMI in pediatric population is questionable, even though BMI may be desirable as a means of tracking the growth patterns of individual children and adolescents in order to identify potential health problems.