Exam 7: Examining Differences Between Means: The T-Test

After careful ethical review of planned procedures, a researcher tests a new brain activation drug by taking a sample of 50 volunteers and randomly assigning 25 participants to the treatment condition and 25 to the control (placebo)condition.She then carries out an fMRI scan to assess the level of activation in regions of the participants' brains 30 minutes after administering the drug.She carries out a between-participants t-test in SPSS which provides the output shown below: Which of the following statements is false?

Which of the following statements is true?

Which of the following statements is true?

Which of the following features do not routinely distinguish between quantitative methods and classical qualitative methods.

Which of the following is not an element of Interpretative Phenomenological Analysis?

How does methodolatry relate to the philosophy of methodological pluralism?

Which of the following is not usually a step in content analysis?

"Events that are the combination of two or more categories of event.For example, where being a woman with an eating disorder is the consequence both of being a woman (vs.a man)and of having (vs.not having)an eating disorder." What is this a glossary definition of?

Which of the following is not usually a step in grounded theory?

"An interview in which a researcher has a predetermined set of questions to ask, but where the interviewer does not necessarily stick to these or ask them in a particular sequence.Instead, the interview itself is conducted in a naturalistic and conversational manner that puts the interviewee at ease and facilitates rapport between interviewer and interviewee." What type of interview is this a glossary definition of?

"A test with two rejection regions that is based on the alternative hypothesis that research reveals an effect (e.g.that two means are different).The nature of any departure from randomness (e.g.which mean will be larger)is not specified." What is this a glossary definition of?

"The degree to which scores above the mean on one variable are associated with scores above the mean on another variable.What is this a glossary definition of?

A sports psychologist is seeking a screening task for talent identification that does not favour one gender over the other.He recruits a sample of 119 athletes (70 male and 49 female)and records the time taken to complete the task.The distribution has a very long tail so he decides to conduct a nonparametric test in SPSS.The output is shown below: Which of the following statements is false?

A personality researcher revisits the hypothesis that frustration leads to regression.She collects data from 49 female Internet users measuring their sense of personal frustration and their self-ratings of aggression.A scatterplot is shown below.A colleague who comments on the research suggests that frustration and aggression are both caused by early childhood experiences. Which of the following statements is true?

A health psychologist plans to conduct a study into alcohol use with adolescents in a country where the legal drinking age is 18.She plans to collect a sample of around 40 people under the age of 18 (20 male and 20 female)from a local youth organization and conduct face-to-face interviews and administer questionnaires that measure alcohol consumption, personality, and well-being and she also plans to secretly observe whether the young people accept alcoholic drinks at the end-of-year function organized by the youth organization.Which of the following statements is true?

If an experimenter conducts a t-test to see whether the responses of subjects in a control group differ from those of an experimental group, which of the following outcomes will yield the highest t-value?

"Research practice that acknowledges the need to do research that is of benefit to particular communities and that seeks to involve potential users in as much of the research process as possible." Which research principle is this a glossary definition of?

Which of the following statements is false?

An educational psychologist administered a number of ability measures to 120 14-year olds.The measures included an IQ test, and tests of mathematics, spelling, and general verbal ability as well as a test of the amount of time it took the students to learn material from the new curriculum.The correlation table is shown below: The research is criticized by other psychologists.On the basis of the information provided which of the following is a potentially valid criticism?

"The hypothetical distribution of differences between the means of two random samples drawn from the same population.It has a mean of 0 and a standard deviation that decreases with the square root of the sample size." What is this a glossary definition of?