Sept 17. Ch2. Theories

Question 0

What is cross-sectional research ?give two pros and two cons!

Answer 0

One time test. Based on age. Follows ppl of different ages on the same day.

Ex. Take a school full of children and test them formal exams and see how scores compare between grades

Pros
Quick
Cheap

Cons
Cohert effect (that age is an exuse for other factors

A lot of guess work

Question 1

What is the difference between cross sectional & longitudinal research?

Answer 1

???

Question 2

What is longitudinal studies?

Answer 2

Over a lifetime study.

Cons
Expensive
You lose patients, researchers over time

Question 3

What is cross sequential research?

Answer 3

The best study for fully understanding. Its a mix of longitudinal and cross sectional studies. Con= Its the most expensive. Its a study of 15 yr olds at diff times.

Question 4

What is correlational design?

Answer 4

Observing the relationship between 2 variables without altering either variable. Ex. Computer games and aggressive behaviour. 3 cons. 1 other factors. 2 incorrect data. 3 causation

Question 5

How do you represent a perfect correlation with a correlation coefficient?

Answer 5

R=1

Question 6

Given example of a negative correlation

Answer 6

As age goes up the number of hairs on your head goes down.

A positive correlation would be as Heights goes up weight goes up.

Question 7

What is random assignment??

Answer 7

Putting people into different groups???

Question 8

What is the independent variable?

Answer 8

Independent variable is systematically manipulated to test its relation with the dependent variable.

Question 9

What is the dependent variable?

Answer 9

Its expected to be effected by

Question 10

How can you tell whether children know something?

Answer 10

Children spend longer time looking at something that is interesting, novel, unusual, or unexpected

Question 11

What is the preferential looking paradigm?

Answer 11

When you present an infant with two visual stimuli at the same time and you see which was more interesting for the baby to look at

Ex. the clowns face or a mushroom

Ex. Mushroom. Or a mushroom with a strange dot

Question 12

What is the habituation paradigm?

Answer 12

Recovery in response to a new stimulus indicating that the infant can discriminate between old and new stimulus. The infants response declines as he is repeatedly shown the same stimulus