PSYC 3466 Lecture Notes - Lecture 18: Echoic Memory, Umwelt, Subitizing
Course CodePSYC 3466
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Wednesday, June 12, 2019
Cognition Lecture Notes
•Better name? Alternative mental organizations? Disordered thinking?
•Meant to refer to the fact that not all minds are alike, and not all of them
follow the same organization
•We can learn a lot about how minds are organized by seeing what happens
to behavior and thinking once some mental function is selectively disrupted,
or develops "abnormally"
◦"Umwelt" - the part of the world you have access to
◦You wouldn't use color blind people to test a theory about color
◦It's important to study the boundaries of thought
•What is normal?
•Scientists tend to sample from people in college which is a biased sample
•What counts as normal depends on the behavior of the general population
◦Deaf people lack auditory input. They see the world differently
◦Iconic / echoic memory and 'subitizing'
•Iconic memory is supposed to be short (~half a second)
•Echoic memory is supposed to be longer (~7-10 seconds)
•Deaf participants have a much higher capacity for numbers, and
it's easy for them to subitize, no matter how many numbers
there are. They have a VISUAL echoic memory.
◦It's important when measuring a person's cognitive abilities, you take
the limits of their umwelt into account
•Psychopaths: lack of remorse/difﬁculty distinguishing between breaking rules
and being immortal. Can empathize with perspectives but not usually able to
feel with others spontaneously.
•Not all criminals!
◦Although a disproportionate number of criminals are psychopaths, the
rate of psychopathy in the world could be as much as 1 in 100 people
(people with enough of these characteristics to reach the threshold). If
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