SPCE 630 FINAL EXAM STUDY GUIDE
2026/2027: COMPLETE EXAM PREP,
PRACTICE QUESTIONS & ANSWERS
Threats to internal validity include: - correct answer-Testing, maturation,
procedural infidelity
Match the definition. 2A. Events that occur during the experiment but that are
not related to planned procedural changes that may influence the outcome -
correct answer-History
2B. Changes in behavior due to the passage of time - correct answer-Maturation
2C. Occurs when participants need to respond to the same test repeatedly during
a baseline or probe condition, which influences responding - correct answer-
Testing
Threats related to the measurement system, and are of concern because of
repeated measurement by human observers who may make errors - correct
answer-Data instability
Inconsistent implementation of the experimental condition - correct answer-
Procedural infidelity
, The loss of participants during a study, which limits the generality of findings -
correct answer-Attrition
Occurs when a participant's behavior is influenced by more than one planned
intervention during the course of a study - correct answer-Multiple treatment
interference
A type of data instability that refers to a repeated and predictable pattern in the
data series over time - correct answer-Cyclical variability
Carryover Effects - correct answer--Refers for an effect of being tested in one
state on participants' behavior in later situations
- May occur in a within-subject trial when the effect of a particular level of the
self-independent variable persists even after the treatment finishes
The hypothesis that states that there is no significant difference between samples
is: - correct answer-The Null Hypothesis
Amanda is an RBT at an ABA clinic. She is working with her client, Jerrell, to
decrease aggressive behaviors (i.e., biting others). She has collected data for the
frequency of Jerrell's bites for three weeks. Calculate the mean, median, and
mode of the following data set (round to the nearest whole number):
Week 1: 12, 11, 10, 22, 22
Week 2: 7, 8, 13, 21, 17
Week 3: 16, 7, 9, 3, 0 - correct answer-Mean= 12, Median=11, Mode=7,22
2026/2027: COMPLETE EXAM PREP,
PRACTICE QUESTIONS & ANSWERS
Threats to internal validity include: - correct answer-Testing, maturation,
procedural infidelity
Match the definition. 2A. Events that occur during the experiment but that are
not related to planned procedural changes that may influence the outcome -
correct answer-History
2B. Changes in behavior due to the passage of time - correct answer-Maturation
2C. Occurs when participants need to respond to the same test repeatedly during
a baseline or probe condition, which influences responding - correct answer-
Testing
Threats related to the measurement system, and are of concern because of
repeated measurement by human observers who may make errors - correct
answer-Data instability
Inconsistent implementation of the experimental condition - correct answer-
Procedural infidelity
, The loss of participants during a study, which limits the generality of findings -
correct answer-Attrition
Occurs when a participant's behavior is influenced by more than one planned
intervention during the course of a study - correct answer-Multiple treatment
interference
A type of data instability that refers to a repeated and predictable pattern in the
data series over time - correct answer-Cyclical variability
Carryover Effects - correct answer--Refers for an effect of being tested in one
state on participants' behavior in later situations
- May occur in a within-subject trial when the effect of a particular level of the
self-independent variable persists even after the treatment finishes
The hypothesis that states that there is no significant difference between samples
is: - correct answer-The Null Hypothesis
Amanda is an RBT at an ABA clinic. She is working with her client, Jerrell, to
decrease aggressive behaviors (i.e., biting others). She has collected data for the
frequency of Jerrell's bites for three weeks. Calculate the mean, median, and
mode of the following data set (round to the nearest whole number):
Week 1: 12, 11, 10, 22, 22
Week 2: 7, 8, 13, 21, 17
Week 3: 16, 7, 9, 3, 0 - correct answer-Mean= 12, Median=11, Mode=7,22
