PSYC 2101 Chapter 3 questions well
answered to pass
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants are randomly assigned to study one of the lists of 30 words for 5 minutes,
do math problems for 5 minutes, then write all the words they recall from the list. Their score is
the number of words correctly recalled. The use of random assignment of participants increases
which of the following?
a. the temporal precedence of the study
b. internal validity of the study
c. the strength of association of the study
d. external validity of the study - correct answer ✔✔b. internal validity of the study
FEEDBACK: Experiments Can Test Causal Claims — Random assignment controlled for possible
alternative explanations.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. Statistical tests show no difference between the real word scores, but a large
difference in the score for made-up words. What validity should be interrogated in the claim
"Word Familiarity Helps Memory?"
a. internal
b. construct
c. external
, d. statistical - correct answer ✔✔a. internal
FEEDBACK: When Causal Claims are a Mistake—The result is based on the difference between
words and made-up words, not familiarity of words. These made-up words may systematically
differ in other ways from the real words.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. Which of the following is an independent variable in this study?
a. the type of word list
b. the time spent studying the list
c. the length of the list studied
d. the number of words correctly recalled - correct answer ✔✔a. the type of word list
FEEDBACK: Experiments Can Test Causal Claims—The type of word list is what is being
manipulated.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. His colleague questioned how his lists were made. What validity is being
challenged?
a. internal
b. construct
c. external
answered to pass
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants are randomly assigned to study one of the lists of 30 words for 5 minutes,
do math problems for 5 minutes, then write all the words they recall from the list. Their score is
the number of words correctly recalled. The use of random assignment of participants increases
which of the following?
a. the temporal precedence of the study
b. internal validity of the study
c. the strength of association of the study
d. external validity of the study - correct answer ✔✔b. internal validity of the study
FEEDBACK: Experiments Can Test Causal Claims — Random assignment controlled for possible
alternative explanations.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. Statistical tests show no difference between the real word scores, but a large
difference in the score for made-up words. What validity should be interrogated in the claim
"Word Familiarity Helps Memory?"
a. internal
b. construct
c. external
, d. statistical - correct answer ✔✔a. internal
FEEDBACK: When Causal Claims are a Mistake—The result is based on the difference between
words and made-up words, not familiarity of words. These made-up words may systematically
differ in other ways from the real words.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. Which of the following is an independent variable in this study?
a. the type of word list
b. the time spent studying the list
c. the length of the list studied
d. the number of words correctly recalled - correct answer ✔✔a. the type of word list
FEEDBACK: Experiments Can Test Causal Claims—The type of word list is what is being
manipulated.
Professor Nakum designs a memory experiment to test the effect of word familiarity on
memory. Three lists of words are created: common words, uncommon words, and made-up
words. Participants study one of the lists of 30 words for 5 minutes, do math problems for 5
minutes, then write all the words they recall from the list. Their score is the number of words
correctly recalled. His colleague questioned how his lists were made. What validity is being
challenged?
a. internal
b. construct
c. external
