Quiz 3 (Psych 049)

availability heuristic

You move to new country for a short internship. During an informal event you are asked how common is the name ‘Nandini’. Your answer is that it is very rare, while others reply that it a very common name that they hear often. What bias/heuristic is operating here ?

• availability heuristic

• belief persistence 

• confirmation bias

increase

A decision variable is influenced by accumulation of evidence. This happens at the level of

______________ in activity of neurons.

• decrease

• no change

• increase

hindsight bias

You finished taking our weekly Psychology quiz and you notice you got an 8/10. You look to see what question you missed and you say aloud "Dang it, I knew it was B and not C." What type of bias does this example portray? (2)

• belief persistence

• hindsight bias

• confirmation bias

• availability heuristic 

Lateral Intraparietal region (LIP)

Researchers have identified the following area to be important in evaluating evidence that leads to a decision.

• sensory receptors

• hypothalamus

• Lateral Intraparietal region (LIP)

• cochlea

blue

You are conducting an experiment where you have trained a monkey to pick the color blue if it sees a square and the color yellow if it sees a circle. You are now measuring neuronal activity from the brain while the monkey is doing the task. Your data shows more persistent firing (increase in activity) in neurons responding to square compared to circle, just before the monkey makes a decision. If you had to predict the monkey’s choice what would your prediction be (based on the neural activity). The monkey will pick the color________?

• green

• yellow and blue

• yellow

• blue

false

T/F: Perceptual decision making relies on value of the stimulus?