PSYC 140 Developmental (Lifespan)
Psychology Practice Exam 2026/2027 –
Complete Exam-Style Questions with Correct
Answers & Detailed Rationales | Verified &
Reliable
Question 1
A developmental psychologist follows the same group of
individuals from infancy through late adulthood, assessing their
cognitive abilities every five years. Which research design is
being used?
A. Cross-sectional
B. Experimental
C. Longitudinal
D. Sequential
Correct Answer: C. Longitudinal
Rationale: A longitudinal study follows the same individuals
over an extended period, allowing researchers to examine
patterns of stability and change within the same participants. A
cross-sectional design compares different age groups at one
point in time. An experimental design manipulates an
independent variable to investigate causality, whereas a
,sequential design combines elements of longitudinal and cross-
sectional approaches.
Question 2
A researcher finds that children who experience higher-quality
early educational environments tend to have stronger language
skills later in childhood. Which conclusion is most scientifically
appropriate?
A. High-quality education necessarily causes superior language
development.
B. Language ability is determined primarily by environmental
factors.
C. The association suggests a relationship but does not by itself
establish causation.
D. Genetic influences can be ruled out because the study
measured environmental experiences.
Correct Answer: C. The association suggests a relationship but
does not by itself establish causation.
Rationale: A correlation between two variables does not
establish that one causes the other. Children receiving higher-
quality educational experiences may differ in other ways, such
as family resources, prior language exposure, or genetic
characteristics. Experimental manipulation is generally required
to make a stronger causal inference. The other choices
,incorrectly treat an association as proof of causation or
unnecessarily exclude genetic influences.
Question 3
Which statement best reflects the modern lifespan perspective
on development?
A. Development is primarily a process of childhood growth.
B. Development is multidirectional and involves gains and
losses across the lifespan.
C. Development is determined almost entirely by genetic
maturation.
D. Development follows an identical sequence and timetable
for every individual.
Correct Answer: B. Development is multidirectional and
involves gains and losses across the lifespan.
Rationale: The lifespan perspective recognizes development as
lifelong, multidimensional, multidirectional, plastic, and
influenced by multiple interacting contexts. Individuals can
experience gains in some abilities while experiencing losses in
others. Development is not restricted to childhood, nor is it
governed exclusively by genes or by a single universal timetable.
Question 4
, A child begins walking shortly after the nervous system and
muscles have reached sufficient biological readiness. Which
concept most directly explains this developmental change?
A. Assimilation
B. Maturation
C. Conservation
D. Social referencing
Correct Answer: B. Maturation
Rationale: Maturation refers to biologically based changes that
unfold as the body and nervous system become sufficiently
developed. Although environmental experiences can facilitate
development, certain abilities depend on biological readiness.
Assimilation is a Piagetian cognitive process, conservation
concerns understanding that quantity remains constant despite
changes in appearance, and social referencing involves using
another person's emotional response to interpret a situation.
Question 5
Which example best illustrates the interaction between nature
and nurture?
A. A child's genetic predisposition for height is expressed
differently depending on nutrition.
B. A person's genes have no influence on development.
C. Environmental experiences completely override biological
Psychology Practice Exam 2026/2027 –
Complete Exam-Style Questions with Correct
Answers & Detailed Rationales | Verified &
Reliable
Question 1
A developmental psychologist follows the same group of
individuals from infancy through late adulthood, assessing their
cognitive abilities every five years. Which research design is
being used?
A. Cross-sectional
B. Experimental
C. Longitudinal
D. Sequential
Correct Answer: C. Longitudinal
Rationale: A longitudinal study follows the same individuals
over an extended period, allowing researchers to examine
patterns of stability and change within the same participants. A
cross-sectional design compares different age groups at one
point in time. An experimental design manipulates an
independent variable to investigate causality, whereas a
,sequential design combines elements of longitudinal and cross-
sectional approaches.
Question 2
A researcher finds that children who experience higher-quality
early educational environments tend to have stronger language
skills later in childhood. Which conclusion is most scientifically
appropriate?
A. High-quality education necessarily causes superior language
development.
B. Language ability is determined primarily by environmental
factors.
C. The association suggests a relationship but does not by itself
establish causation.
D. Genetic influences can be ruled out because the study
measured environmental experiences.
Correct Answer: C. The association suggests a relationship but
does not by itself establish causation.
Rationale: A correlation between two variables does not
establish that one causes the other. Children receiving higher-
quality educational experiences may differ in other ways, such
as family resources, prior language exposure, or genetic
characteristics. Experimental manipulation is generally required
to make a stronger causal inference. The other choices
,incorrectly treat an association as proof of causation or
unnecessarily exclude genetic influences.
Question 3
Which statement best reflects the modern lifespan perspective
on development?
A. Development is primarily a process of childhood growth.
B. Development is multidirectional and involves gains and
losses across the lifespan.
C. Development is determined almost entirely by genetic
maturation.
D. Development follows an identical sequence and timetable
for every individual.
Correct Answer: B. Development is multidirectional and
involves gains and losses across the lifespan.
Rationale: The lifespan perspective recognizes development as
lifelong, multidimensional, multidirectional, plastic, and
influenced by multiple interacting contexts. Individuals can
experience gains in some abilities while experiencing losses in
others. Development is not restricted to childhood, nor is it
governed exclusively by genes or by a single universal timetable.
Question 4
, A child begins walking shortly after the nervous system and
muscles have reached sufficient biological readiness. Which
concept most directly explains this developmental change?
A. Assimilation
B. Maturation
C. Conservation
D. Social referencing
Correct Answer: B. Maturation
Rationale: Maturation refers to biologically based changes that
unfold as the body and nervous system become sufficiently
developed. Although environmental experiences can facilitate
development, certain abilities depend on biological readiness.
Assimilation is a Piagetian cognitive process, conservation
concerns understanding that quantity remains constant despite
changes in appearance, and social referencing involves using
another person's emotional response to interpret a situation.
Question 5
Which example best illustrates the interaction between nature
and nurture?
A. A child's genetic predisposition for height is expressed
differently depending on nutrition.
B. A person's genes have no influence on development.
C. Environmental experiences completely override biological
