Ch.8 Flashcards
Thinking
any mental activity or processing of information, including learning, remembering, perceiving, communicating, believing, and deciding
Cognitive economy
Allows us to simplify what we attend to and keep the information we need for decision making to a manageable minimum.
-We draw inferences that provide mental shortcuts. Most of these guesses we call intuitive or system 1 thinking.
- Brains have adapted by finding ways to streamline the cognitive tasks.
- Invests as little mental energy as possible unless it’s necessary to do more.
- Reduce our mental effort but enable us to get things right most of the time.
- occasionally get us in trouble, leads us not merely to simplify but oversimplify.
Cognitive biases
Systematic error in thinking.
- Heuristics, predispositions, deflator expectations.
representativeness heuristic
Heuristic that involves judging the probability of an event by its superficial similarity to a prototype (stereotype)
Base rate
Term for how common a behaviour or characteristics is In general.
Ex: when evaluating probability that a person belongs to a category (math major), we need to consider not only how similar that person is to other members of the category but also how prevalent that category is overall.
availability heuristic
heuristic that involves estimating the likelihood of an occurrence based on the ease with which it comes to our minds
hindsight bias
our tendency to overestimate how well we could have predicted something after it has already occurred
confirmation bias
which is our tendency to seek out evidence that supports our hypotheses or beliefs and to deny, dismiss, or distort evidence that doesn’t
Top-down processing
brains have evolved to streamline processing in other ways besides heuristics and biases. One key example is that we fill in the gaps of missing information using our experience and background knowledge.
Bottom up processing
We can contrast top-down processing with bottom-up processing, in which our brain processes only the information it receives, and constructs meaning from it slowly and surely by building up understanding through experience.
Examples of top-down processing
Chunking- organize info into larger units.
Concepts- our knowledge and ideas about objects, actions, and characteristics that share core properties.
Schemas- are concepts we’ve stored in memory about how certain actions, objects, and ideas relate to each other. Enable us to know roughly what to expect in a given situation and to draw in our knowledge when we encounter something new. Build a standard script
decision making
the process of selecting among a set of possible alternatives
System 1 and system 2 thinking
1: rapid and intuitive
2: explicit and deliberate
Framing
The way a question is formulated that can influence the decisions people make
problem solving
generating a cognitive strategy to accomplish a goal
Algorithms
step-by-step learned procedure used to solve a problem
-come in handy for problems that depend on the same basic steps for arriving at a solution every time the solution is required.
-ensure that we address all steps when we solve a problem, but they’re pretty inflexible.
Subproblems
flexible approach is to break down a problem into subproblems that are easier to solve.
By breaking down the problem into bite-sized chunks, we can often solve it more quickly and easily.
Reasoning from related problems
Another effective approach involves reasoning from related examples
Analogies
Drawing analogies between two distinct topics. These analogies solve problems with similar structures.