WGU D202 HUMAN GROWTH AND DEVELOPMENT
OBJECTIVE ASSESSMENT EXAM QUESTIONS AND
CORRECT ANSWERS WITH RATIONALE LATEST 2026
The WGU D202 Objective Assessment evaluates your comprehension of the
human lifespan, from conception to death. The exam covers major
developmental theories, including Piaget's cognitive stages, Erikson's
psychosocial crises, and Vygotsky's sociocultural concepts. You must
demonstrate knowledge of physical milestones, such as motor development
and puberty, alongside cognitive changes like memory and intelligence. The
assessment also tests your understanding of social and emotional
development, including attachment, parenting styles, and identity formation.
Questions are scenario-based and require you to apply theoretical knowledge
to practical situations, ensuring you can analyze human behavior across all
age groups effectively.
1. A researcher is gathering information for a study to determine if adolescents
experience depression more than middle-aged adults. The researcher observes and
records behavior exhibited by both groups. Which research design does this
exemplify?
a) Experimental research
b) Correlational research
c) Descriptive research
d) Longitudinal research
Correct Answer: c) Descriptive research
Rationale: Descriptive research involves observing and recording behavior without
manipulating variables. This design is often used to identify patterns or trends in
populations, as the researcher is simply describing the behaviors of the two
different age groups.
2. Which research design tracks the same individuals over an extended period to
study developmental changes?
a) Cross-sectional
b) Longitudinal
c) Experimental
d) Descriptive
Correct Answer: b) Longitudinal
,Rationale: A longitudinal study follows the same participants over time, which
allows researchers to identify developmental trends and individual changes that
occur as people age.
3. Observing children in a natural classroom setting to assess their social
interactions is an example of which type of research method?
a) Experimental research
b) Naturalistic observation
c) Survey research
d) Case study
Correct Answer: b) Naturalistic observation
Rationale: Naturalistic observation involves watching subjects in their natural
environment without intervention. This method provides high ecological validity
because behaviors are observed as they occur spontaneously in real-world settings.
4. A developmental psychologist administers a questionnaire to 500 parents about
their children's sleep habits. What type of research method is being used?
a) Naturalistic observation
b) Case study
c) Survey
d) Experimental
Correct Answer: c) Survey
Rationale: Surveys involve collecting data from a large number of participants
through questionnaires or interviews. They are efficient for gathering self-reported
information on behaviors, attitudes, or demographics from a broad sample.
5. A researcher conducts an in-depth investigation of a single child who has a rare
genetic disorder to better understand the condition. This approach is known as a:
a) Cross-sectional study
b) Longitudinal study
c) Case study
d) Correlational study
Correct Answer: c) Case study
Rationale: A case study provides detailed, qualitative information about one
individual or a small group. This method is particularly useful for studying rare
phenomena or generating hypotheses for further research.
6. To determine if a new teaching method improves reading scores, a researcher
randomly assigns one group of students to the new method and another group to
the traditional method. This is an example of:
,a) Correlational research
b) Experimental research
c) Descriptive research
d) Naturalistic observation
Correct Answer: b) Experimental research
Rationale: Experimental research involves manipulating an independent variable
(the teaching method) to observe its effect on a dependent variable (reading scores)
while controlling for extraneous factors through random assignment.
7. A study finds that as the number of hours spent studying increases, exam scores
tend to increase as well. This relationship represents a:
a) Negative correlation
b) Zero correlation
c) Positive correlation
d) Causal relationship
Correct Answer: c) Positive correlation
Rationale: A positive correlation means that as one variable increases, the other
variable also increases. However, correlation does not imply causation; other
factors may be influencing both variables.
8. A researcher finds a correlation coefficient of -0.85 between stress levels and
immune system functioning. This indicates:
a) A strong positive relationship
b) A weak negative relationship
c) A strong negative relationship
d) No relationship
Correct Answer: c) A strong negative relationship
Rationale: A correlation coefficient near -1.0 indicates a strong negative
relationship, meaning that as stress levels increase, immune functioning tends to
decrease significantly.
9. In an experiment, the group that does not receive the treatment or intervention is
called the:
a) Experimental group
b) Control group
c) Independent group
d) Dependent group
Correct Answer: b) Control group
, Rationale: The control group serves as a baseline for comparison. Participants in
this group are not exposed to the independent variable, allowing researchers to
determine whether the treatment had a significant effect.
10. The variable that is manipulated by the researcher in an experiment is known as
the:
a) Dependent variable
b) Confounding variable
c) Independent variable
d) Extraneous variable
Correct Answer: c) Independent variable
Rationale: The independent variable is the factor that the researcher intentionally
changes or manipulates to observe its effect on the dependent variable. It is the
presumed cause in a cause-and-effect relationship.
11. The variable that is measured to assess the effect of the manipulation in an
experiment is the:
a) Independent variable
b) Dependent variable
c) Control variable
d) Correlational variable
Correct Answer: b) Dependent variable
Rationale: The dependent variable is the outcome that is measured. It is expected
to change as a result of the manipulation of the independent variable, representing
the effect.
12. A researcher wants to know if a new drug reduces anxiety. Participants are
randomly assigned to receive either the drug or a sugar pill. The sugar pill is a:
a) Placebo
b) Independent variable
c) Confounding variable
d) Dependent variable
Correct Answer: a) Placebo
Rationale: A placebo is an inert substance that has no therapeutic effect. It is used
in the control group to account for the psychological effects of receiving treatment,
ensuring that any observed effects are due to the drug itself.
13. In a double-blind experiment, both the participants and the:
a) Researchers analyzing the data are unaware of the group assignments
b) Participants are told which group they are in
OBJECTIVE ASSESSMENT EXAM QUESTIONS AND
CORRECT ANSWERS WITH RATIONALE LATEST 2026
The WGU D202 Objective Assessment evaluates your comprehension of the
human lifespan, from conception to death. The exam covers major
developmental theories, including Piaget's cognitive stages, Erikson's
psychosocial crises, and Vygotsky's sociocultural concepts. You must
demonstrate knowledge of physical milestones, such as motor development
and puberty, alongside cognitive changes like memory and intelligence. The
assessment also tests your understanding of social and emotional
development, including attachment, parenting styles, and identity formation.
Questions are scenario-based and require you to apply theoretical knowledge
to practical situations, ensuring you can analyze human behavior across all
age groups effectively.
1. A researcher is gathering information for a study to determine if adolescents
experience depression more than middle-aged adults. The researcher observes and
records behavior exhibited by both groups. Which research design does this
exemplify?
a) Experimental research
b) Correlational research
c) Descriptive research
d) Longitudinal research
Correct Answer: c) Descriptive research
Rationale: Descriptive research involves observing and recording behavior without
manipulating variables. This design is often used to identify patterns or trends in
populations, as the researcher is simply describing the behaviors of the two
different age groups.
2. Which research design tracks the same individuals over an extended period to
study developmental changes?
a) Cross-sectional
b) Longitudinal
c) Experimental
d) Descriptive
Correct Answer: b) Longitudinal
,Rationale: A longitudinal study follows the same participants over time, which
allows researchers to identify developmental trends and individual changes that
occur as people age.
3. Observing children in a natural classroom setting to assess their social
interactions is an example of which type of research method?
a) Experimental research
b) Naturalistic observation
c) Survey research
d) Case study
Correct Answer: b) Naturalistic observation
Rationale: Naturalistic observation involves watching subjects in their natural
environment without intervention. This method provides high ecological validity
because behaviors are observed as they occur spontaneously in real-world settings.
4. A developmental psychologist administers a questionnaire to 500 parents about
their children's sleep habits. What type of research method is being used?
a) Naturalistic observation
b) Case study
c) Survey
d) Experimental
Correct Answer: c) Survey
Rationale: Surveys involve collecting data from a large number of participants
through questionnaires or interviews. They are efficient for gathering self-reported
information on behaviors, attitudes, or demographics from a broad sample.
5. A researcher conducts an in-depth investigation of a single child who has a rare
genetic disorder to better understand the condition. This approach is known as a:
a) Cross-sectional study
b) Longitudinal study
c) Case study
d) Correlational study
Correct Answer: c) Case study
Rationale: A case study provides detailed, qualitative information about one
individual or a small group. This method is particularly useful for studying rare
phenomena or generating hypotheses for further research.
6. To determine if a new teaching method improves reading scores, a researcher
randomly assigns one group of students to the new method and another group to
the traditional method. This is an example of:
,a) Correlational research
b) Experimental research
c) Descriptive research
d) Naturalistic observation
Correct Answer: b) Experimental research
Rationale: Experimental research involves manipulating an independent variable
(the teaching method) to observe its effect on a dependent variable (reading scores)
while controlling for extraneous factors through random assignment.
7. A study finds that as the number of hours spent studying increases, exam scores
tend to increase as well. This relationship represents a:
a) Negative correlation
b) Zero correlation
c) Positive correlation
d) Causal relationship
Correct Answer: c) Positive correlation
Rationale: A positive correlation means that as one variable increases, the other
variable also increases. However, correlation does not imply causation; other
factors may be influencing both variables.
8. A researcher finds a correlation coefficient of -0.85 between stress levels and
immune system functioning. This indicates:
a) A strong positive relationship
b) A weak negative relationship
c) A strong negative relationship
d) No relationship
Correct Answer: c) A strong negative relationship
Rationale: A correlation coefficient near -1.0 indicates a strong negative
relationship, meaning that as stress levels increase, immune functioning tends to
decrease significantly.
9. In an experiment, the group that does not receive the treatment or intervention is
called the:
a) Experimental group
b) Control group
c) Independent group
d) Dependent group
Correct Answer: b) Control group
, Rationale: The control group serves as a baseline for comparison. Participants in
this group are not exposed to the independent variable, allowing researchers to
determine whether the treatment had a significant effect.
10. The variable that is manipulated by the researcher in an experiment is known as
the:
a) Dependent variable
b) Confounding variable
c) Independent variable
d) Extraneous variable
Correct Answer: c) Independent variable
Rationale: The independent variable is the factor that the researcher intentionally
changes or manipulates to observe its effect on the dependent variable. It is the
presumed cause in a cause-and-effect relationship.
11. The variable that is measured to assess the effect of the manipulation in an
experiment is the:
a) Independent variable
b) Dependent variable
c) Control variable
d) Correlational variable
Correct Answer: b) Dependent variable
Rationale: The dependent variable is the outcome that is measured. It is expected
to change as a result of the manipulation of the independent variable, representing
the effect.
12. A researcher wants to know if a new drug reduces anxiety. Participants are
randomly assigned to receive either the drug or a sugar pill. The sugar pill is a:
a) Placebo
b) Independent variable
c) Confounding variable
d) Dependent variable
Correct Answer: a) Placebo
Rationale: A placebo is an inert substance that has no therapeutic effect. It is used
in the control group to account for the psychological effects of receiving treatment,
ensuring that any observed effects are due to the drug itself.
13. In a double-blind experiment, both the participants and the:
a) Researchers analyzing the data are unaware of the group assignments
b) Participants are told which group they are in
