reliability ( part 2)

Question 1

reliability means
OBSERVED SCORES=true score(what intrested) +measure error (other infleucne)

Answer 1

consistency overtime

Question 2

how many types reliability

Answer 2

6

Question 3

test re test

Answer 3

participants repeat same scale
after delay of time
the run correlation of first and second round

Question 4

test re test (add on)

Answer 4

strong positive corr= reliable
consider mean effect and stability of construct

Question 5

alternative reliability( parrell)

Answer 5

consruct meausre using different scale

Question 6

alter (add on

Answer 6

strong pos-reliable
difficulty in equivilant scale

Question 7

split in half reliability

Answer 7

item within scale measure same construct
split into two and run correlation

Question 8

split ( add on)

Answer 8

strong pos- internal consitency
relies having enough items

Question 9

odd even reliability

Answer 9

similar to split in half.
items based on odd or even

Question 10

odd even ( add on)

Answer 10

strong positive= internal consitency

Question 11

CRONBACHS ALPHA

Answer 11

most common
internal consitency
correlates every split half and calc avareage correlation

Question 12

cronbach ( add on)

Answer 12

value- 0-1= strong correlation= increase relaible
min value .7 PERFERABLE .8

Question 13

INTER RATER relibaility

Answer 13

observational data
degree of agreement=higher agreement=higher reliability

Question 14

inter rater (add on)

Answer 14

calc= kappa coeffiecent(k) closer to 1 higher agreement - o no agreement

0.10-20 slight
0.21-40fair
0.41-60-moderate
0.61-80-substantioal
0.81-0.99-near perfect
1=perfect

Question 15

what mean inter rate you want

Answer 15

.15 to .50

Question 16

inter rater and cronbach

Answer 16

both meaure internal reliability
- use inter rater if less than 10