IOA MEASURES -Chapter 5

Question 1

Mean count per-interval IOA

Answer 1

Interval 1 IOA + interval 2 + Interval N IOA / n intervals *100 = mean count per interval IOA %

Question 2

Exact count per interval IOA

Answer 2

The percentage of total intervals in which two observers recorded the same count.

Number of intervals of 100% IOA / n intervals * 100 = exact count per interval IOA

Question 3

Trial-by-trial IOA

Answer 3

Number of trials (items) agreement / total number of trials (item) *100

Question 4

Total duration IOA

Answer 4

Shorter (total) duration / longer (total) duration *100

Question 5

Mean-duration-per-occurrence

mea-latency-per-response IOA

mean IRT-per-response IOA

Pg 117 example

Answer 5

Dur IOA R1 + Dur IOA R2 + Dur IOA Rn/ n responses with Dur IOA * 100

Also used for mean-latency-per-response IOA and mean IRT-per-response IOA

Question 6

Interval- by- interval IOA

Answer 6

Number of intervals agreed/number of intervals agreed + number of intervals disagreed *100

Question 7

Scored-interval IOA

Answer 7

Only intervals in which either or both observers recorded the occurrence of the target behavior are used

Number of occurrence of target behavior agreed/ number of target behavior agreed + number of target behavior disagreed * 100

Question 8

Unscored-interval IOA

Answer 8

Only intervals in which either or both observers recorded the no occurrence of the target behavior are considered

umber of nonoccurrence of target behavior agreed/ number of nonoccurrence of target behavior agreed + number of nonoccurrence of target behavior disagreed * 100

Question 9

Total count IOA

Answer 9

For event recording data. The percentage of agreement between the total number of responses recorded by two observers

Smaller count /larger count *100 =total count IOA%