TASK 5 - DECISION MAKING Flashcards
decision making
= process of selecting a choice from all the available options
stages of decision making
- theory of natural decision making
- setting goals: goals influence decisions; decisions are steps toward something you want to accomplish
- gathering information: know what the options, consequences are
- decision structuring: organise all information (listing options + criteria for deciding among them)
- making final choice
- evaluation
√ flexibility in phase order (if struggling, returning to previous phases)
cognitive illusions
= errors of cognition that come about for understandable reasons and that provide information relevant to understanding normal functioning –> systematic biases
- heuristics = rules of thumb; strategies that ignore part of the information with the goal of making decisions more quickly
cognitive illusions
- framing effect
- description frames the decision (e.g. 2 gas stations)
- “context effect” in decision making
- changing description can lead people to adopt different reference points
- loss aversion
cognitive illusions
- anchoring
= rely too much on an initial piece of information offered (= anchor) when making decisions
cognitive illusions
- sunk cost effects
= greater tendency to continue something once one has invested in it
- due to emotional investment, you are too invested in one ida and unwilling to quit
cognitive illusions
- illusory correlation
= seeing a relationship between variables even when there isn’t any
- typically have some prior associations in peoples’ minds
cognitive illusions
- hindsight bias
= tendency to exaggerate what could’ve been anticipated in foresight when looking back in hindsight
- once you know how a decision turned out, events leading up to outcome seem more inevitable than they really are
cognitive illusions
- confirmation bias
= only gather information consistent with prior hypothesis/information confirming previous idea
cognitive illusions
- overconfidence
= people’s impressions of own accuracy are inflated; arrogance
- fail to see need for help
cognitive illusions
- omission bias
= tendency to prefer inaction to action when engaged in risky decision making
- anticipated regret: greater when unwanted outcome caused by own actions rather than inaction
- status quo bias = decision avoidance; preference for maintaining the status quo (present state) rather than acting to change one’s decision
x action bias = don’t just sit there, do something
cognitive illusions/bounded rationality
- saitsficing
= strategy that aims for a satisfactory/adequate result, rather than the optimal solution
- “good enough” rather than expending effort/resources on finding best possible/optimal choice
1. satisficers = people content with making reasonably good decision; were happier and more optimistic, greater life satisfaction, less regret (not found in Chinese)
2. Maximisers = perfectionists - Simon
cognitive illusions
- fast-and-frugal heuristics
= heuristics involving rapid processing of relatively little information
- take the best, ignore the rest
x why do we have capacity of logical reasoning if we could always follow gut feelings
x more complex than suggested –> often not sufficient knowledge of validities
fast-and-frugal heuristics
- availability heuristic
= instances that are more easily thought of/accessible, stand out more in one’s mind
- own behaviours more prevalent to us than that of others
- failure to include base rate info in probability estimation
- availability by recall (number of instances recalled) vs. fluency mechanism (how easy it WOULD be to recall without actually retrieving from memory)
fast-and-frugal heuristics
- representativeness heuristic
= representatives/typical members of a category are encountered more often
- failure to include base rate info
- mistaken belief in the law of small numbers: people expect small sample to show same proportions as large sample
- gambler’s fallacy: mistaken belief that if something happens more frequently than normal during a given period, it will happen less frequently in the future
- conjunction fallacy: mistaken belief that the probability of a conjunction of 2 events (A & B) is greater than the probability of one of them
fast-and-frugal heuristics
- recognition heuristic
= using knowledge, that only one out of two objects is recognised, as basis for making a judgment; selecting object that is recognised in preference to the one not recognised (recognise cologne not Herne, decide cologne is bigger)
- exploits lack of knowledge
x more complicated than assumed –> consider why they recognise and object + decide then whether to use
base rate fallacy
= cognitive error whereby too little weight is placed on the base (original) rate of possibility
base rate information = the relative frequency of an event within a given population
utility models
= we try to maximise utility (subjective value we attach to an outcome)
- normative models = define ideal performance under ideal circumstances
- prescriptive models = show how we ought to make a decision (= consider that circumstances aren’t ideal and show how to best decide)
utility models
- expected utility theory
= trying to assess the subjective utility of certain objects
- normative model: ideal performance under ideal circumstances
- expected value (EV= ∑(p×v)): determine to choose the one with the higher value & see how much money you should spend
- expected utility (EU= ∑(p×u)) = (probability of a given outcome) x (utility of the outcome): captures ideas of happiness, pleasure & satisfaction that comes from achieving goals (= psychological rather than monetary value)
limitations of expected utility theory
x calculation of EU difficult: info about several aspects of the decision must be integrated (various factors and goals)
x only accounting for making final selection from a set of alternatives –> not making decisions with “status quo vs. make a change” option
x doesn’t describe processes by which people structure a decision (= gather info and lay out possibilities + parameters)
utility models
- multi-attribute theory (MAUT)
- ideal strategy –> bounded rationality (more realistic)
1. break a decision into independent dimensions
2. determine relative weights of each dimension (= subjective value)
3. list all alternatives
4. rank alternatives along dimensions
5. multiply ranking by weighting of each alternative to determine final value
6. choose alternative with highest value - normative model: if people follow MAUT they will maximise own utility in a way that is best for achieving all their goals
- dimensions must be chosen carefully
- person would be willing to choose an alternative that was not highest on the highest ranked dimension when the relative position on other dimensions compensates for that
limitations of multi-attribute utility theory
x elimination by aspects (descriptive model): when decision makers have too much info to deal with they don’t take all dimensions into account but rather select one factor, pick a threshold value and everything that exceeds that threshold value is tossed
x Homo economicus assumed: too rational
x procedure too complex
x set of relative dimension can not always be worked out; not clearly separate from each other
descriptive models
= simply detail what people actually do when they make decisions (= actual performance); what people ACTUALLY do
descriptive models
- bounded rationality
= people are as rational as their processing limitations permit
- produce reasonable/workable solutions to problems in spite of our limited processing ability (heuristics)
- unbounded rationality = if all the information you need, could choose best choice
- Simon