KINS 2223 Study Guide - Midterm Guide: Osteoporosis, Supine Position, Primitive Reflexes

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What is catch-up: human power to stabilize and return to a genetically determined growth path after being pushed off trajectory . What is a critical period: a time when specific conditions or stimuli are required for optimal or even normal dev, developmental window . Understand the study by mcgraw (jimmy and johnny): johnny and jimmy. In 1935, myrtle mcgraw conducted a study on twin brothers. Observed for first 22 months of life. Wanted to determine if normal progression in motor dev could be altered by given conditions. Johnny given toys, stimulation, practice, and experience in mvmt activities (programming) Jimmy (no-programming) given few toys and had minimal mvmt experience. Ex: johnny given tricycle when 11 months old and taught to roller skate at less than 1 year of age. The researcher concluded that there are 4 factors that affected human mvmt at an early age. Practice, attitude, readiness, level of fixity, and physical growth.

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