Signal Detection Theory
Terms in this set (...)
a persons ability to pick out a particular stimulus or signal.
influences of sensitivity
intensity of the signal, capacity of sensory organs and the amount of background stimulation/noise
the spontaneous random firing of neurons and is always present and constantly fluctuating... it is like the static on radio and tv
a persons willingness or reluctance to say that a stimulus is present. it the amount of energy needed for a person to justify saying that a signal has occurred
motivation, needs and expectation
responsive criterion reflects
signal detection theory
is a mathematical model of our personal sensitivity and response criterion combined to determine decisions about whether not a near-threshold stimulus has occurred
Why is Signal Detection theory important?
Because it suggests that detecting signals does not depend on stimuli alone. Personal contex in which signals occur also plays a role.
How does eyewittness testimony apply to signal detection theory?
people have response bias
the process by which sensory systems adapt to constant stiumuli by becoming less sensitive to them
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