problem solving Flashcards
what is a problem
obstacle between a present state and a goal, for which it is not immediately obvious how to get around the obstacle
wel defined vs ill defined problem
well defined = correct answer, certain procedures will lead to the solution eg math
ill define - path to solution is unclear, no one correct answer eg relationship issue, choosing a career
gestalt approach to problem solving
representing a problen in the mind
restructuring - changes the problens representation in the mind and allows a solution to be found
eg kohlers circle problem
kohler’s apes
observe how the animals solved problems
put apes in a latge cage
gave them implements that they oculd use to obtain the food that was placed in plain view
sat back and watched what they did
first tried to reach food with given toolss
then seemed to have “aha” moment = reached for other sticks instead
movements were goal-orientated, purposeful and deliberate = sudden insight
metcalfe and wjebe experiment
insight - triangle problem (make a triangle of dots a different shape), chain problem (make chain links of 12 by fidling with 3)
these problem are used as only really insight works
(noninsight - algebra)
warmth judegements every 15 seconds - how close they hink they are to a solution
metcalf and wiebe results
insight problems solved suddenly and spike at the end
noninsight problems solved gradually
newell and simon information processing approach (move away from gestalt)
problem solving can be thought of as a search, as if you were navigating a maze
problem space
-inital state
-intermediate states
-goal state
operators - rules to specify which moves are allowed and which are not
eg tower of hanoi
what heuristics can help with
when the problem space is too vast eg in chess (not gonna map out every single move)
name some heuristics
hill - climbing strategy
means end analysis
explain hill-climbing strategy
get closer to the goal each time
eg wont always work = if need to move further away from the goal
not always the best strategy
explain means end analysis
can the current state be made more simpler to the goal state using available operators
leads to subroblems each with its own goal
gets around vastness problem
what is functional fixedness
restricting the use of an object to its familiar functions
-candle problem = seeing boxes as containers inhibited using them as supports
two-string problem = function of pliers gets in the way of seeing them as a weight
problem solving set or einstellung
situation influences approach to problem
is a heuristic
once have learnt problem one way struggle to see any other way - which might be a quicker solution for different questions
eg water jug problem
or want to keep problem solving solution within problem
framing of a problem
acrobat and reverse acrobat problem
hung up on surface features of a problem. by changing the surface can change the difficulty
not just analyzing problem space, how a problem is stated will change its dificulty
say a big acrobat can only stand on a little one (reverse = this is tricky cause seems weird)
also mutilated-checkerboard
mutilated checkerboard problem
conditions differed in how much info provided about the squares (worst to best conditions:)
blank
red/ black
red / black in words
bread / butter in words
easier to solve when information is provided that points them towards the correct representation of the problem