GenPsychDevelopment1 - Development Part 1 Page 1 Lecture...

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Development Part 1 - Page 1 Lecture Outline Behavioral genetics. Cognitive development. Studying infants. Infants’ sensory and memory capabilities. Piaget’s stage theory. The information processing approach. Behavioral Genetics, Heritability, and Evolution of Behavior The assignment due before this class is to read Module 5.1 of the textbook, which covers these topics. There is also a podcast on the topic of heritability to view after you’ve read the module. The concept of the heritability quotient is a difficult yet important one, and it is discussed in more detail in the podcast. There will be clicker and exam questions in the future about the content of the podcast. Studying Infant Cognitive Development Psychologists rely on the few things that infants can do to infer infants’ abilities and preferences: Eye movements. Sucking. Kicking. Habituation : As a stimulus is repeated, infants show less interest in it. Habituation can thus be used to draw inferences about infants’ perceptual abilities. Repeatedly present a stimulus to an infant until habituation occurs. Show a different stimulus. If dishabituation is observed, the infant can detect the difference.
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Development Part 1 - Page 2 Newborn Sensory Capacities Hearing is relatively well-developed at birth. (See figure in textbook.) Infants respond with changes in heart rate to loud sounds (even in the womb).
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