Chptr_03 - Early Development Chapter 3 64 Chapter 3 Early...

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Early Development - Chapter 3 64 PSYCHOLOGY: Exploring Behavior Chapter 3: Early Development: From Creation to Adolescence Early Development: From Creation To Adolescence Observing Behavior Goals of Developmental Psychologists Methods of Developmental Psychologists What is Development? Heredity Physical Environment and Development Social Environment Within the Family Social Environment Beyond the Family The Interaction of Heredity and environment Development and Forms of Behavior Ethology How about humans? Human Development Genetics, Dominance and Recession Prenatal Life Changes in Infancy Motor skills in Infancy Sensing the World in Infancy Language development in Infancy Self-concept in Infancy Childhood Changes: Skills and Body USING PSYCHOLOGY: Psychology and Parenting Language Development in Childhood Self-Concept in Childhood REVIEW QUESTIONS ACTIVITIES INTERESTED IN MORE? Early Development: From Creation to Adolescence WHAT'S THE ANSWER?: From Conception to Confusion "Last summer I served as a senior counselor in a summer camp up at the lake. Late one evening I was writing a letter to my girl friend when the biggest spider I've ever seen dropped into view. I decided to play a dirty trick on him. The spider was weaving the circular part of his web, so I unhooked that first strand from the porch floor and part of the web shriveled up. You know what that spider did? He started all over again! -- when all he had to do was anchor one more support and go right on." Why did the spider start its web from the beginning? "Marcia's parents both have brown eyes," she said.
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Early Development - Chapter 3 65 PSYCHOLOGY: Exploring Behavior "That's not possible," he said. "Marcia has blue eyes! Brown-eyed parents can't have blue-eyed children." Who's right? He or she? "My sister and brother-in-law had a baby girl about a month ago. Last night when I was playing with their baby I put my index fingers in her hands. When I moved my fingers, she didn't let go. In fact, I lifted her right up off the blanket! My sister was there to catch her if anything had happened. But I really don't understand it. That baby can't even hold her own bottle, but she's strong enough to hold herself up in mid-air!" What did happen here? Developmental psychologists study changes in human behavior as they relate to age -- ranging from developmental changes in the early years to those of adolescence, adulthood and our retirement years. Most studies observing developmental changes in human behavior are trying to describe the behavior and to explain it -- the ultimate goals of developmental psychologists. The usual research techniques offer partial solutions to problems caused by the changing environments of youth during the past century. To control this problem developmental psychologists use methods such as longitudinal and cross- sectional studies, taking care to select groups at each age that are as comparable as possible.
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