Class Notes (808,386)
Canada (493,174)
Psychology (6,021)

Sept 19 How to break downs can illuminate the mind.docx

4 Pages
Unlock Document

Western University
Psychology 2135A/B
Marcie Penner- Wilger

Sept 19 How to break downs can illuminate the mind 11111111111111111111111111111111111111111111111111111111111111111111111111111111111 1111111111111111111left over from last class Functional analysis -breakings an algorithm into different steps -ex. How to sort socks, do this then do this, each step is draw as a box then with arrows in between  Intelligent behaviours are complex  Use function analyses to decompose behaviour into a sequence of subcomponents Addition example  Hypothesis 1: children add two numbers by counting out each addend on their fingers and then counting all their fingers -step 1: count first addend on fingers -step 2: count second addend on fingers Raise # of Raise # of fingers fingers Count all raised Say answer Read equivalent to fingers question equivalent first second added on addend on fingers fingers Subtraction method  Donders (1868)  Interested in how long cognitive processes take  Component mental processes are strictly successive (serial)  RT for component processes combine additively to yield overall RT  Stages may be inserted or deleted without affecting other component processes Simple RT task  Example: seated in front of a panel that contains a light bulb and a response button  When the light comes on, you must press the button  Requires perception and motor stages (the time to perceive the light and then execute the response) Discrimination RT task  Example: seated in front of a panel with two light bulbs and one response button  When a prespecified target light (eg. The one on the left) is illuminated, you must press the button, but not if the one on the right is illuminated  Required perception and motor stages +a perceptual discrimination stage Choice RT task  Example: seated in front of two light bulbs, each with their own button  You must press the button corresponding to the illuminated light  Requires perception, motor, and discrimination stages + a response selection stage Subtraction Method  Time for selection process= choice RT- discrimination RT  Time for discrimination process= discrimination RT- simple RT  Method was widely used (eg. Wundt) Criticisms of Subtraction Method  Pure insertion/ deletion assumption was false  Inserting or deleting a processing stage changes the quality of the other stages  No longer used in cognitive psychology -now used in neuroscience to see what part of the brain is most active with more stages than with less, subtraction method Additive Factors Method  Sternberg (1969)  Interested in discovering the stages of cognitive processing and factors that influence the stages  Processing stages are serial  Factors can selectively influence the duration of different stages Additive Factors Method -additive the effect of one independent variable is the same at different levels of the other independent variable, looks like two parallel lines on a graph -interactive is different at the different levels of another independent variables, lines are not parallel on a graph  When the effect on RT of two or more factors is additive, the distinct stages of processing are involved  When the effect on RT of two or more factors is inter
More Less

Related notes for Psychology 2135A/B

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.