PSY 450 Exam 3

What is psychophysics?

• Studies the relationship between physical stimuli and sensations

• Studies the relationship between physical stimuli and sensations

• Studies the relationship between physical stimuli and sensations

• Study of relationship between property of stimuli and the impressions of those stimuli

What are thresholds?

• Upper and lower thresholds (min/max intensity stimuli detected 50% of the time)

• Different thresholds (difference detected 50% of the time) demonstrated lawful relationships between physical stimuli and psychological impressions of stimuli.

• Lower thresholds that can be detected 75% of the time.

• Same thresholds (can be detected 50% of the time) including the intensity of stimuli detected.

What did Helmholtz study?

• Visual perception

• Depth perception and binocular vision

• Argued infants learn about their sensory worlds through extensive experience and unconscious inferences.

• Peripheral perception and dept perception

Weber's just noticeable differences

• The smallest detectable difference between the standard and the comparison.

• The smallest detectable difference between the alternate and the comparison.

• The unique difference between the standard and the comparison.

• The largest difference between the standard and the comparison.

What is a system?

• An organized way of envisioning the world or some aspect of the world.

• How psychologists are able to organize and understand the world.

• An organized way of studying the world and its aspects

• How psychologists are able to study the small aspects inside a particular city.

William Moulton Marston's contributions

• Developed the polygraph

• Used popular writings to promote the psychological well-being of the public.

• Advocated for greater freedom and opportunity for women

• Continued Munsterberg's popularization of psychology.

• Argued that infants learn about their sensory worlds through extensive experience.

William James

• Founder of American Psychology

• Believed in free will

• Radical empiricism

• Stream of thought

• Wrote "The Principles of Psychology" and "The Principles"

Ivan Pavlov

• Research on digestion

• Research on salivary reflex leads to conditioning work

• Later work focused on experimental neurosis

Franz Brentano

• Defined psychology as science of mental phenomena

• Distinguished between inner observation (introspection) and inner perception (retrospection)

• Prefer verbs to nouns

• If conflict between experiments and reason, go with reason

Hugo Minsterberg

• Presented a psychology turned to the daily lives of humans

• Psychology and law

• Psychotherapy

• Industrial psychology