Exam 2: D: Reading and Evaluating Scientific Research

Research in which a carefully selected group of people is asked a set of predetermined questions in interviews or through questionnaires is known as __________.

Professor McSpell designed an experiment to test her hypothesis that exercise will increase spelling ability.She divided children into three groups and had one group do 10 minutes of exercises,one group do 30 minutes of exercises,and the third group do no exercise.She then tested all three groups of children to see how many words they could spell correctly on a spelling test.In this experiment,the scores on the spelling test serve as the

In an experiment,four groups of college students used different memorizing strategies to learn the material in one chapter of a textbook.Then each group was given the same multiple-choice test on the material.What was the dependent variable in this study?

A researcher,based on her review of relevant scientific studies,believes that there is a relationship between the frequency of a baby's crying and whether it was nursed at set intervals or on a demand schedule.If this belief were tested by experimentally manipulating feeding schedules,frequency of crying would be called the

Experimenter bias can best be controlled using ________.

In an experiment to test the effects of anxiety on performance,the dependent variable is the __________.

One of the main reasons for using a laboratory for psychological research is to

In a test of the effects of sleep deprivation on problem-solving skills,research participants are allowed to sleep either four or eight hours on each of three consecutive nights.This research is an example of

Naturalistic observation is ____________________.

A large group of people whom you want to know about is called a __________.

Which term best describes the correlation between depression and fatigue?

A psychologist wanted to see if people are more prone to seek the company of others when anxious than when calm.He randomly assigned half of his subjects to an anxiety group and then told them that,as part of the study,they would receive electric shocks.He did not frighten the other group of subjects.Finally,he recorded how many subjects in each group chose to be "tested" in a group setting and how many chose to be "tested" alone.What was the dependent variable in this study?

To obtain objective information,researchers sometimes must deceive their subjects.Ethically,research involving deception must always _________.

The purpose of an experiment is to discover whether there is a relationship between the ___________ and the ___________.

Positive correlation shows

A researcher wished to study the relationship between high school grades and post-secondary grades.Of the following research methods,which would be the most appropriate?

A subset of cases selected from a larger population is a __________.

What is the primary weakness of a scale that adds two kilograms to everything it weighs?

A psychologist wanted to see if people are more prone to seek the company of others when anxious than when calm.He randomly assigned half of his subjects to an anxiety group and then told them that,as part of the study,they would receive electric shocks.He did not frighten the other group of subjects.Finally,he recorded how many subjects in each group chose to be "tested" in a group setting and how many chose to be "tested" alone.What was the independent variable in this study?

In psychological studies,random assignment is used to ensure that