103_24_full - PSYC 103 Winter 2011 Lecture 25 Communication...

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PSYC 103 Winter 2011 Lecture 25 Communication Final: Friday March 19 th 8AM Monday, March 14 Warren Lecture Hall Room 2005 8-9:20pm
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Honey-bee communication Von Frisch (1950) - Upon returning to the hive, a worker bee will dance on the vertical surface of a comb if she has collected food - If food is between 50 to 100 meters away = round dance - If food is more than 100 meters away = waggle dance - Waggle dance provides distance and direction information about the location of food: Number of waggles related to distance from hive Direction of waggle run = constant angle to vertical. This angle corresponds to the angle (at the hive) between (a) the direction of food and (b) the sun round waggle
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(ii) Development of communication Honey-bees Von Frisch (1950) Italian bees: each waggle = food is 45 meters from hive Egyptian bees: each waggle = food is 12 meters from hive If pupae of one race are placed into the colony of another, behavior is more appropriate to the colony of their real sisters than foster sisters Is communication? Innate : Signal = unconditioned response by sender to a stimulus Reaction = unconditioned response to the signal Acquired: Could influence the message and the way in which it is received
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(ii) Development of communication Song birds Calls: Brief & monosyllabic, indicative of emotional states. Little change from generation to generation, probably genetically determined Birdsong: More complex, involving sequences of syllables and notes. Learning important Marler (1970) -Studied variations in the song of the white-crowned sparrow -Isolated birds of different ages for various intervals -Development of bird song depends upon exposure to song when between 10 and 50 days old Baptista & Petrinovich (1984, 1986 ) -Sparrows can still learn if older than 50 days -Can learn the song of a different species: strawberry finch Petrinovich (1988) - Sparrows can learn any song they attend to - Better at learning from a live tutor as the constant variation maintains attention to the song
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Communication Ethological model of communication : use of a ‘signal’ to influence the behavior of another individual.
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