Reliability vs accuracy vs validity

Question 1

Accuracy vs validity vs reliability
which one?

Example:

A therapist counts 15 instances of hand-flapping, and the actual number is 16 → fairly _____

If the count was 10 → less ______

Answer 1

Accuracy (fairly accurate, less accurate)

Question 2

Accuracy vs validity vs reliability
which one?

Definition:

How close a measurement is to the true value of the behavior.

Also called measurement correctness.

Answer 2

Accuracy

Question 3

Accuracy vs validity vs reliability
which one?

Key Point:

______ is about error in measurement, not consistency

Answer 3

Accuracy

Question 4

Accuracy vs validity vs reliability
which one?

Definition:

The extent to which a measurement reflects the actual dimension of behavior it’s intended to measure.

In other words: are we measuring what we think we’re measuring?

Answer 4

Validity

Question 5

Accuracy vs validity vs reliability
which one?

Example:

Measuring hand-raising: recording every hand-raise during class → ____

Measuring hand-raising by only counting first 5 minutes of class → less ____

Answer 5

Validity (valid, less valid)

Question 6

Accuracy vs validity vs reliability
which one?

Key Point:

_______ is about accuracy of conceptual measurement, not just numerical counts

Answer 6

Validity

Question 7

Accuracy vs validity vs reliability
which one?

Key Point:

_____ is about consistency, not necessarily correctness (a consistently wrong measurement can be reliable but not accurate or valid)

Answer 7

Reliability

Question 8

Accuracy vs validity vs reliability
which one?

Example:
IOA -

Observer 1 counts 16 tantrums; Observer 2 counts 15 → IOA = 94% → reliable

If repeated sessions give similar counts → measurement is ______

Answer 8

Reliability

Question 9

Accuracy vs validity vs reliability
which one?

Definition:

The consistency or repeatability of measurement across observers, time, or instruments.

High reliability means that different observers or repeated measurements produce similar results.

Answer 9

Reliability

Question 10

what is the difference between accuracy and measurement?

Answer 10

Summary:

Measurement = the process of data collection

Accuracy = how correct the data collected are

Question 11

measurement vs accuracy
which one?

Definition:

The degree to which a recorded measurement matches the true occurrence of behavior.

Measures correctness of the data collected, not the act of measuring itself

Answer 11

accuracy

Question 12

measurement vs accuracy
which one?

Key Points:

_______ is a property of the _______

A _____ can be reliable but not _____ (e.g., consistently undercounting behavior)

Answer 12

accuracy, measurement
measurement, accurate

Question 13

measurement vs accuracy
which one?

Definition:

The process of observing and recording behavior in a systematic way.

In ABA, _____ is objective and quantifiable, often using dimensions like rate, duration, magnitude, or topography.

Answer 13

measurement

Question 14

measurement vs accuracy
which one?

Key Points:

______ is the act or method of collecting data

Can be accurate or inaccurate, reliable or unreliable, valid or invalid

Answer 14

Measurement

Question 15

measurement vs accuracy
which one?

Example:

Counting every instance of hand-raising in a 30-minute session

Recording the duration of a tantrum

Answer 15

Measurement