Infant Cognition plus finish perception Results from Test
- Slides: 17
Infant Cognition (plus finish perception) • • • Results from Test Results from Survey First part of Paper due on Tuesday Visual Cliff/depth perception/constancies Themes of Infant cognitive development Piaget’s 6 stages of infant cognition René Ballargeon’s studies Categorization Causality Infant Number concepts Memory Development in Infancy Individual differences in Infant Cognition
Test Scoring and Results • Score = # multiple choice *2 + # fill in the blank *2 + essay scores (10 pts. For essay) + 6 point curve • Distribution – A – 16 – B – 26 – C – 31 – D – 27 – F – 23
Results from Questionnaire N = 113 Much to fast 6 A little too fast 52 About right 46 A little too slow 9 Much too slow 0 Average is right between a little too fast and about right. Many complaints about the room and size of class. Many would like more interactive activities in class, videos of actual child behavior, and group activities. • Some appreciated the connection between lectures and the text and others failed to see the connection • Several would like more specificity in the study guide for the test. • • •
Depth/Distance Perception • Visual Cliff (Walk and Gibson) 6 -7 months • Campos (1978) – Notice at 2 months (orienting response) – Fear after they can crawl • Looming (Yonas, et al) – Blink at 1 month – Defensive response at 3 months • Pictorial depth cues between 5 to 7 months
Size and Shape constancy • Some skill at birth • Skill improves by 3 to 5 months
Themes of Infant Cognition 1. The orderly nature of cognitive development. 2. Infants are active participants in their own development. 3. Infant cognitive development is marked by both advances and limitations.
First two years • Advances achieved during infancy include: • basic understanding of physical world • ability to use basic cognitive tools such as understanding categorization & number • ability to combine actions into sequences • increasingly powerful & flexible memory • Limitations until late in infancy include: n n emphasis on perception & action absence of language & symbolic abilities limited flexibility in emerging cognitive abilities limited memory capacity
Piaget’s Theory and the Nature of Infants • Infants’ understanding of the world is limited to what they know through sensory awareness and motor acts. • Infants actively construct an understanding of the world. • http: //www. ovguide. com/jean-piaget 9202 a 8 c 04000641 f 800000 a 4720
Processes of Developmental Change Key Terms in Piaget’s Theory Adaptation The process by which children change in order to function more effectively in their environment. Assimilation Applying an existing capability without modification to various situations. Accommodation Modifying an existing strategy or skill to meet a new demand of the environment. Schemes Cognitive structures that can be applied to a variety of situations. Equilibration A self-regulatory process that produces increasingly effective adaptations. Copyright © 2004 The Mc. Graw-Hill Companies, Inc. Permission required for reproduction or display.
Piaget’s 6 Stages of Sensorimotor Development • • • Stage 1: Reflexes, 0 -1 month Stage 2: Primary Circular Reactions, 1 -4 months Stage 3: Secondary Circular Reactions, 4 -8 months Stage 4: Coordination of Schemes, 8 -12 months Stage 5: Tertiary Circular Reactions, 12 -18 months Stage 6: Beginnings of Representational thought, 18 -24 months.
The Object Concept Stages 1 & 2: Infants respond to objects with interest but seem not to understand object permanence. Stage 3: A partial view of something is now enough to remind them of the whole object. Stage 4: Infants search for hidden objects, making the A, not-B error. Stage 5: No longer make the A, not-B error, but may get upset when object isn’t at location B. Stage 6: At last acquire mature understanding of object permanence.
Video of Object Permanence • http: //www. youtube. com/watch? v=lh. Hk. J 3 In. Q OE • http: //www. youtube. com/watch? v=4 j. W 668 F 7 Hd. A Research with primates • René Ballargeon • http: //www. youtube. com/watch? v=u 2 ov. HFt 5 YXc
Categorization • Distinction of kinds (Mandler, 1998) – Distinction between natural and artificial
Number Concepts • Starkey & Cooper (1980) – Discriminating 2 and 3 but not 4 vs 6 – Disagreement about whether it is really number or amount
Causality • Michotte and the perception of causality • Infants discriminate between some causal and non-causal events • http: //www. yale. edu/perception/Brian/demo s/causality-Basics. html – Leslie (1984) brick pushing another brick – Baillargeon and supported versus non-supported box
Memory • Piaget and effecting an Mobile • Rovee-Collier– under what conditions do infants remember
Individual differences in Infant memory • How complex a figure can they habituate to • How long to habituate • Correlation to later IQ moderate after 18 months.
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