Exam 9: Experimental Research

Professor Steve Slick used the classical experimental design to test ways to raise self-assurance in stressful situations.At what part of the experiment does Slick measure the level of his dependent variable after introducing the independent variable?

Define the following:internal validity

Define the following:static group comparison

Define the following:laboratory experiment

In experimental research,what does external validity refer to? Briefly describe two instances where external validity is a threat to the overall findings and conclusions of an experiment.

Define the following:mortality effect

Define the following:equivalent time series

Define the following:random assignment

In experiments,the treatment variable is simply another term for

Define the following:statistical regression

Define the following:science of the sophomore

Doris Denning wanted to study the relationship between high school students' grades and assessments of their teachers.After teaching her research assistants proper interviewing techniques,Doris provided them with fake transcripts and disciplinary histories,which depicted some students as exceptional and others as trouble-makers.In reality,the 'exceptional' students and 'trouble-makers' were labelled as such randomly.Once the assistants' interviews concluded,the data indicated 'exceptional' students held their teachers in much higher esteem than the 'trouble-makers.' What threat to internal validity does Doris' study most likely have?

Which of the following is least suited to providing clear evidence about a causal relationship between two variables?

Which of the following is NOT one of the pragmatic,common sense ideas that accounts for the difference between the successful research projects of an experienced researcher and the difficulties a novice researcher faces?

Doctoral candidate Stella Sodapop wanted to see whether caffeine intake increased a subject's state of sexual arousal.She randomly assigned 100 high school seniors to either an experimental or control group.The experimental group drank a high caffeine soda,while the control group drank a caffeine-free soda.She then measured and compared arousal states for both groups.What type of design did Stella use?

An experimenter uses a "2 x 3" design.To what exactly do the numbers refer?

Define the following:one-shot case study

What is a "placebo" in experimental research?

Researcher Zoe Zednick wanted to test the effectiveness of a new anger management treatment session at the Prairie County social work agency.She assembled 24 clients who had been referred for anger management and divided them randomly into two groups of 12.One group was assigned to the new anger management session while the other group went to a traditional anger management session.Each group was given an intake assessment that measured anger management skills.After clients finished the sessions,Zednick measured the level of anger management skills for all subjects in both groups.What experimental design did she use?

Define the following:interaction effects