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Terms in this set (31)An experiment is defined by (a) the manipulation of a variable. or extraneous variables. (b) control of confounding (c) tests of causal relationships. d) all of the above. d) all of the above. An independent variable is (a) a manipulated variable (b) a measured variable (c) an extraneous variable (d) rarely included in an experiment (A) a manipulated variable Which of the following represents an experiment? (A) two groups of participants (those who are left handed in those who are right handed) are asked to perform a speeded cognitive test to compare performance for the two groups. (B) participants take a handedness questionnaire with score indicating the degree of right and left handedness to look for a relationship between handedness score in time to complete a cognitive task. (C) participants are randomly assigned to conditions where a cognitive task is given with speeded or non-speeded instructions to determine if there is an effect of instruction type on task performance (C) participants are randomly assigned to conditions where a cognitive task is given with speeded or non-speeded instructions to determine if there is an effect of instruction type on task performance At minimum, how many independent variables must be included in a study in order for it to be classified as an experiment? (A) none (B) one Participants receive all levels of an _____ variable, but only one level of an ____ variable. (A) independent;
dependent (C) within-subjects independent; between-subjects independent _________ effect's pitchy when the order in which the participants experience conditions in an experiment affects the results of the study. (A) testing (B) order ______ can be used to counter order effects (A) randomization (B) counterbalancing When different groups of participants receive different offers of the levels of the independent variable this is called: (A)
randomization (B) counterbalancing In a Latin square, the number of orders used is equal to the number of _____ in the experiment. (A) independent variable (C) conditions Participants in between subjects experiments should be _____ to levels of the independent variable to control for group differences as an extraneous variable: (a) independently assigned (D) randomly assigned A ____ design is a between subject experiment that involves sets of participants matched on a specific characteristic with each member of the set randomly assigned to a different level of the independent variable: (a) significant (D) matched Which of the following might be a reason a researcher would used a quasi experiment? (A) quasi experiments are more internally valid than experiments (E) both B and C Pretest-posttest designs are quasi experiments when they do not contain a (A) confounding variable (C) randomly assigned control group
These are events that occur during the course of a study to all or individual participants that can result in bias: (A) history effects (A) history effects These natural changes that occur to the participants during the course of a study that can result in bias: (A) history effects (D) maturation Which of the following would help control for biased in a prettest-posttest design? (A) increasing the amount of time between the pretest and posttest (B) including a control group that does not receive the treatment The Solomon Four-Group design is a pretest-posttest where (A) The experimental and control groups are randomly assigned (B) there are two experimental and control groups, one that takes the pretest and one that does not take the pretest Time-series designs are pretest-posttest designs that (a) include a randomly assigned control group. (b) compare a pattern of scores over time before and after the treatment. (c) includes groups that do not take the pretest (b) compare a pattern of scores over time before and after the treatment A study was done to compared the pattern of heart attack rates across the year before and the year after a public smoking ban has been enacted. The researchers who conducted this study used a _____ design. (A) equivalent time-series (B) interrupted time-series difference between an interrupted time series design and a non-interrup is that the interrupted time series design includes a _____ event, while a non-interrupted time series design includes a _______. (A) Psychological/non-psychological (C) naturally occurring/researcher implemented In terms of the way days are analyzes, a quasi-experiment is most like which other research design (A) experiment (A) experiment The hypothesis that an effect or relationship does not exist (or exists in the opposite direction of the alternative hypothesis) in the population is the: (a) the alternative hypothesis (b) the statistical hypothesis (c) the null hypothesis (d) the critical region (c) the null hypothesis The probability level used by researchers to indicate the cutoff probability level (highest value) that will allow them to reject the null hypothesis is called: (a) the degrees of freedom (b) power (c) the alpha level (d) the null hypothesis (c) the alpha level If a study involves comparing fwo means from a within-subjects experimental design tne appropriate statistical test is ___ A paired/related samples t-test If a study involves comparing two means from a between-subjects experimental design, the appropriate statistical test is _____ An independent sample t-test If a study involves an examination of the relationship between two variables measured on an interval or ratio scale, the appropriate statistical test is Pearson r test If a study involves comparing more than two means, the appropriate statistical test is ANOVA An experiment was conducted to compare participant responses to two different social /situations. All participants viewed a scene with two children playing cooperatively and a scene with two children arguing while playing. Participants responded to a questionnaire measuring anxiety after viewing each scene to determine if the type of scene viewed had an effect on anxiety scores. The appropriate statistical test to analyze the data in this study is A paired/related samples t-test A quasi-experiment was conducted to compare extramarital affairs. Men and women who are married were recruited to complete a men's and women's attitudes about survey about their attitudes. The researchers then compared scores on the survey for men and women. The appropriate statistical test to analyze the data in this study is An independent samples t-test A researcher was interested in the effect of anxiety on intelligence measurement. A group of 100 individuals were placed in an anxiety-provoking situation before being given an IQ test. The scores for this group were then compared to the IQ population mean of 100. The appropriate statistical test to analyze the data in this study is A one sample t test A researcher conducted a correlational study to examine the relationship between high school GPA and extroversion. A group of high school students competed a measure of extroversion. The GPAS for these students was then obtained from their records. The appropriate statistical test to analyze the data in this study is a Pearson r test Sets with similar termsCh 11 & 1234 terms Angel_Lewis31 Research methods CH 10 & 1187 terms sdavis21 Research Methods in Psychology: Chapter 1076 terms misteriosahar Exam 382 terms davischristy Other sets by this creatorEXAM 3 (Chapter 15)7 terms jjcahoe EXAM 13 (Chapter 13)13 terms jjcahoe EXAM 3 (Chapter 12)9 terms jjcahoe EXAM 3 (CHAPTER 11)13 terms jjcahoe Recommended textbook solutions
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What is an interrupted timeInterrupted Time Series Designs. Refer to studies in which an interruption occurs during the time period and its effects are observed. Example of interrupted time-series design. The effects of treatment are inferred from a comparison of outcome measure obtained before and after the treatment.
Which of the following distinguishes a timeWhich of the following distinguishes a time-series design from an interrupted time-series design? a. Time series examines the effect of a treatment and interrupted time series examines the effect of an outside event.
What is a interrupted timeInterrupted Time Series Design
A time series is a set of measurements taken at intervals over a period of time. For example, a manufacturing company might measure its workers' productivity each week for a year. In an interrupted time series-design, a time series like this one is “interrupted” by a treatment.
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What is one difference between a time-series design and an interrupted time-series design quizlet
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