week 13 Flashcards
What was the revolutionary change in the concept of information brought about by information theorists like Shannon and Weaver?
Shannon and Weaver revolutionized the concept of information by proposing a way to measure the amount of information transmitted when an event occurs. This idea was based on the principle that communicative acts provide information only as they reduce ignorance or uncertainty about the state of things.
How is the amount of information quantified in terms of ‘bits’?
The amount of information is quantified in terms of ‘bits’, where ‘bit’ is short for ‘binary digit’. The concept is that each time the number of equally likely alternatives doubles, the number of bits goes up by one. For instance, flipping an unbiased coin with two equally likely outcomes provides one bit of information.
What is the significance of the example involving guessing a number between 1 and 8 in understanding information theory?
This example illustrates how the concept of bits corresponds to the number of questions needed to find the right answer. It demonstrates how the process of reducing possibilities by half with each question can quantify the amount of information in terms of bits.
How does cognitive psychology view the concept of information differently from communication engineers?
In cognitive psychology, the concept of information goes beyond the quantitative definition used by communication engineers. Psychological experiments must also take into account the meaning of the information presented to participants, not just the quantity of information transmitted.
Discuss Noam Chomsky’s contribution to understanding human language.
Noam Chomsky argued that behaviorist principles could not explain significant aspects of language, such as the inherent creativity in natural language. He proposed that the ability to generate new sentences and the understanding of grammar are intrinsic to human language and cannot be explained by behaviorist stimulus-response theories.
What is the TOTE model and its significance in cognitive psychology?
TOTE, standing for Test-Operate-Test-Exit, is a model that describes a feedback loop mechanism in behavior. It suggests that actions are initiated by testing an input against a standard, operating to reduce discrepancies, and exiting the routine once the standard is met. This model is significant in understanding cognitive processes and behavioral control.
Discuss the concept of ‘Subjective Behaviourism’ as proposed by Miller, Galanter, and Pribram.
‘Subjective Behaviourism’ is a concept that combines objective behavioral methods with subjective approaches like ‘thinking aloud’. It attempts to investigate internal cognitive processes while maintaining the rigor of empirical validation.
Describe the ‘New Look’ in perception introduced by Jerome Bruner.
The ‘New Look’ in perception, initiated by Jerome Bruner, focused on the joint function of the stimulus and the state of the organism in perception. It explored how needs, interests, and past experiences influence perceptual organization.
How did Ulric Neisser contribute to cognitive psychology?
Ulric Neisser is considered a pivotal figure in cognitive psychology. He proposed that cognitive processes resemble computer programs and focused on information processing, pattern recognition, and the icon concept in cognition.
What is the core idea of Sir Frederic Bartlett’s theory in cognitive psychology?
Bartlett’s theory in cognitive psychology centered around the concept of schemas as active organizations of past reactions. He emphasized that memory and cognition are not mere replays of past experiences but are dynamic and adaptable to current situations.
Explain Herbert A. Simon’s views on computer simulation in cognitive psychology.
Herbert A. Simon, a pioneer in artificial intelligence, believed that cognitive processes could be simulated using computer programs. He emphasized that cognitive models should be modular and adaptable to different situations, akin to computer algorithms.
What is the ‘Heuristics and Biases’ program by Kahneman and Tversky?
The ‘Heuristics and Biases’ program by Kahneman and Tversky explores how people use mental shortcuts (heuristics) that can lead to systematic errors (biases) in judgment and decision-making. It investigates the influence of intuitive reasoning in cognitive processes.
Discuss the concept of ‘Ecological Validity’ in cognitive psychology.
: ‘Ecological Validity’ refers to the extent to which cognitive research reflects real-world situations. It emphasizes the importance of studying cognition in natural, culturally significant settings to better understand human behavior and thought processes.
How did Amos Tversky and Daniel Kahneman contribute to the understanding of judgment and choice?
Tversky and Kahneman significantly influenced the study of judgment and choice by demonstrating how people often rely on heuristics, leading to predictable biases in decision-making. Their work illuminated the cognitive processes underlying judgment and choice.
What was the revolutionary change in the concept of information brought about by information theorists like Shannon and Weaver?
Shannon and Weaver revolutionized the concept of information by proposing a way to measure the amount of information transmitted when an event occurs. This idea was based on the principle that communicative acts provide information only as they reduce ignorance or uncertainty about the state of things.
How is the amount of information quantified in terms of ‘bits’?
The amount of information is quantified in terms of ‘bits’, where ‘bit’ is short for ‘binary digit’. The concept is that each time the number of equally likely alternatives doubles, the number of bits goes up by one. For instance, flipping an unbiased coin with two equally likely outcomes provides one bit of information.