The procedure designed to ensure that the experimental and control groups to not differ in any way that might affect the experiment's result is called
What is the mode of the following distribution: 2, 2, 4, 4, 4, 14?
Juwan eagerly opened an online trading account, believing that his market savvy would allow him to pick stocks that would make him a rich day trader. This belief best illustrates
The set of scores that would likely be most representative of the population from which it was drawn would be a sample with a relatively
small standard deviation
One reason researchers base their findings on representative samples is to avoid the false consensus effect, which refers to our tendency to
overestimate the extent to which others share our belief
What is the mean of the following: 2, 3, 7, 6, 1, 4, 9, 5, 8, 2?
Which of the research strategies would be best for determining whether alcohol impairs memory?
The football team's punter wants to determine how consistent his punting distances have been during the past season. He should compute the
Martina believes that high doses of caffeine slow a person's reaction time. In order to test this belief, she has five friends each drink three 8-ounce cups of coffee and then measures their reaction time on a learning task. What is wrong with Martina's research strategy?
no control condition
The scientific attitude of skepticism is based on the belief that ideas
need to be tested against observable evidence
What is the measure of variation that is most affected by extreme scores?
The procedure designed to ensure that experiments and control groups do not differ in any way that might affect the experiment's results is called
Bob scored 43 out of 70 on his psych exam. He was worried until he discovered most of the class did the same. This is called
What type of research would allow you to determine whether students' college grades accurately predict later income?
What is the perception of a correlation when there is none?
The four families on your block all have an annual household income of $25,000. If a new family with an annual income of $75,000 moves in, which measure of central tendency would be most affected?
In an experiment to determine the effects of attention on memory, memory is the ________ variable.
To prevent the possibility that a placebo effect or researchers' expectations will influence a study's results, scientists employ the
double blind procedure
Which type of research would allow you to determine whether students' college grades accurately predict later income?
What is overestimating the extent to which others share our belief?
False consensus effect
Joe believes that his basketball game is always best when he wears his old gray atheletic socks. Joe is a victim of the phenomenon called
Principles that help organize, predict and explain facts are
In a test of the effects of air pollution, groups of students performed a reaction time task in a polluted or an unpolluted room. To what condition were the students in the unpolluted room exposed?
A psychologist studies the play behavior of third grade children by watching groups during recess at school. Which type of research is being used?
Your belief is your _____ and your research prediction is your _____.
In order to study the effects of lighting on mood, Dr. Cooper had students fill out questionnaires in brightly lit or dimly lit rooms. In this study, the independent variable consisted of