solutions
Attrition - correct answer ✔✔when a participant drops out
compound questions / double-barreled questions - correct answer ✔✔question that attempts to ask
about more than one issue in the same question
tend to receive incomplete or confusing answers
internal consistency - correct answer ✔✔A measure of reliability; the degree to which a study
establishes a trustworthy cause-and-effect relationship between treatment and outcome.
interviews - correct answer ✔✔questions asked orally (in person/over the phone)
likert scales - correct answer ✔✔ordered range of responses to gauge stance
sum of responses to multiple questions intended to measure the same variable.
loaded questions - correct answer ✔✔a question that presupposes information or potentially biases a
response by including an assumption that may not be justified.
ex:
"have you stopped beating your wife?"
open-ended vs. closed-ended response - correct answer ✔✔open-ended: survey item in which
respondents are free to respond in any way they want
close-ended: survey item in which you choose from a number of predetermined responses.
pilot study - correct answer ✔✔a "prestudy" conducted before your actual study to assess your
survey/interview instrument or test a methodology.
, helps determine that participants understand your questions, the survey is too long, and gives you ways
to evaluate your survey
reliability - correct answer ✔✔consistency of measurement
test-retest, parallel forms, split-half
Surveys vs. Questionnaires - correct answer ✔✔questionnaires: set of questions w a narrow focus
surveys: a set of questions administered to a group of respondents, usually via paper or online, to learn
about attitudes and behavior. can contain several questionnaires.
between subject design - correct answer ✔✔each person is only in one group and then those groups are
compared. is easy to set up and do data analysis but is costly has high variability
validity - correct answer ✔✔some threats to validity include participants not understanding your
questions, not being honest, might be careless or have an agenda
blind designs (single vs. double) - correct answer ✔✔single blind:
the participant does not know the experimental condition
double blind:
both experimenter and researcher don't know which condition they have been assigned to
ceiling and floor effects - correct answer ✔✔ceiling effect is when task is too easy and everyone does
well and floor effect is when it is too hard and everyone fails
confederate - correct answer ✔✔a person who is given a role to play in a study so that the social context
can be manipulated