Chapters 1-4 Flashcards
What is learning
Biological mechanism
how we interact w/ our world
survival meachanism
adapting to a change
a change in behavior due to previous experience
modifies behavior
How does natural selection relate to learning
- natural mutations that are beneficial for survival get passed down to the next generation
- mutation need to interact w/ the environment; the environment determines random mutation
human behaviors that came about w natural selection are…..
innate
adaptive
& help us cope w/ our environment
what are reflexes?
involuntary relationship b/t an event and a response to that event
some presnt @ birth, other develop w/ time
characteristics of reflexes
- involuntary
- found in almost all species
- protect us from injury
what are Modal Action Patterns (MAPs)
“instincts”
- a more complicated series of actions/reflexes
- series of related acts found in almost all members of a species
- **Releaser: stimulus that triggers a MAP
Ex: ant trail, bear hibernation, opossum playing dead
human usually don’t have MAPs
characteristics of a MAP
- they evolve w/ Natural Selection (survival mech)
- involuntary
- everyone does them the same way
- every time you do a MAP, you do it the same way
what makes a MAP different than a reflex
- MAPs involve the whole body rather than a part
- MAPs are more complicated than reflexes
what are general behavior traits?
a tendency to engage in a certain typr of behavior
- response can vary; voluntary
- occur in a variety of situations (no stimulus required)
- can be influenced by hereditary/genetics
- vary w/i a species
problems w/ Natural Selection
- inefficient
- mutations occur by chance
- it happens very SLOWLY
- good for a species, but not necessarily for an individual in that species
what are the two major components of learning?
Experience & Behavior
what is “experience?”
- any change in the environment
- involves stimuli:
- any physical items/ changes in the enviro.
- they effect each other, making the world complicated
what is “behavior?”
- anything a person does that can be measured
- changes the can be measured
what are the 4 measurable changes in behavior?
learning is a change in:
- frequency
- intensity
- speed
- form
does a change in behavior have to last?
NO, the change does not have to be lasting
learning is not memory
are all changes learning?
No, some changes in behavior are attributed to other factors such as responses to….
- injuries
- other physical limitations
- aging
- intoxication
- illness
why measure behavior when you could just measure brain changes?
- brain changes can occur w/o learning
- they are physiological & complex
- a small brain change may not cause a change in behavior–> not ADAPTING
- however, brain changes can be related to behavior
what is habituation?
- most simple example of learning
-
reflex adapts to a stimulus
- decr. your rxn to a stimulus; get used to it
Ex: after hearing a book fall repeatedly, you no longer have a response to it
- decr. in strength or occurence of a behavior (reflex response) after repeated exposure to a stimulus that produces the behavior
benefits of habituation
survival value
helps conserve energy/resources by realizing you don’t need to respond as strongly or at all to a stimulus
characteristics of habituation
it’s stimulus specific
- after being habituated to one stimulus you may still experience a new stimulus
- Ex: book slamming + fire alarm
** the less intense the stimulus, the easier it is to become habituated to it, the *more * intense, the harder it is (low beep = easy vs. loud siren = hard)
what is stimulus generalization?
the closer the new stimulus is to the old stimulus , the less the reflex will “bounce back” or recover
what is dishabituation?
renewal/recovery of responding in a habituated stimulus after presentation of a new stimulus
demonstrates that habituation does not occur simply due to fatigue or disinterest in the stimulus
ex: book falls, startled again
how quickly habituation happens depends on…
- how arousing the stimulus is
- how many times it is experienced
- time b/t exposure to the stimulus
-
learn through repeated exposure that a stimulus is not dangerous
- shorter time pds b/t = quicker habituation
-
learn through repeated exposure that a stimulus is not dangerous
how long does habituation last?
- short term habituation: seconds or minutes
- long term habituation: anything longer than a few minutes
what is spontaneous recovery?
reappearance or increase in strength of a response after a period w/o stimulus presentation
more likely to occur for habituation created by more frequent stimulus presentation
what is sensitization?
(opposite of habituation)
- experiences w/ an arousing stimulus lead to a stronger response to that stimulus
- ex: electric shock w/ a loud noise
- increase reflex response
- can amplify response to other types of stimuli presented after the sensitizing stimulus*
what are the 7 measures of learning?
- Topography
- Fluency
- Latency
- Intensity
- Error
- Rate
- Speed
what is topography?
a change in a behaviors form
ex: learning to use a mouse clicker
what is fluency?
measure of learning that combines error and rate
number of responses per minute
what is latency?
how long it takes one to react to a stimulus
a change in time before a behavior occurs
what is intensity?
measure of learning noting changes in intensity of a behavior/response to a stimulus
what is error?
measure of learning noting a reduction in the number of errors
what is rate?
a change in the rate at which a behavior occurs
number of occurences per unit of time
***allows us to see _subtle changes in behavior _***
what is speed?
a measure of learning noting a change in speed in which a behavior occurs
3 sources of data
Anecdotes
Case Studies
Experiments
what is an anecdote?
1st/2nd-hand report of personal experiences
common wisdom
**good starting point; get general ideas of how others think