Research Meth.

Problem&Solution

Statistics

Vocabulary

Potpourri

research method in which the psychologist observes the subject in a natural setting without interfering

What is naturalistic observation

Two ways in which researchers avoid a self-fulfilling prophecy

What is using a single-blind or double-blind experiment

a graph that uses rectangles to show frequency distribution

What is a histogram

the group to which an independent variable is applied

What is the experimental group

participants are picked to represent proportionally the population that is being studied

What is a stratified sample

research method in which information is obtained by asking many individuals a fixed set of questions

What is a survey

An experiment where the participants nor the experiminters know which participants received which treatment

What is a double-blind experiment

a statistic that describes the direction and strencth of the relationship between two sets of data

What is a correlation coefficient

a situation in which a researcher's expectations influence that person's own behavior, and thereby influence the participant's behavior

What is a self-fulfilling prophecy

a measure of variability that describes an average distance of every score from the mean

What is standard deviation

research method in which data is collected about a group of participants over a number of years to assess how certain characteristics change or remain the same during development

What is a longitudinal study

an experiment where the participants do not know if they have received the treatment or the placebo

What is a single-blind experiment

On a normal curve, the center of the ranage of scores is represented by this type of central tendency

What is the mean

an arrangement of data that indicates how often a particular score or observation occurs

What is frequency distribution

If an authority figure is in the room then people will administer painful shocks to others

What is the hypothesis for the Milgram experiment

research method in which data is collected from groups of participants of different ages and compared so that conclusions can be drawn about differences due to age

What is a cross-sectional study

The Milgram experiment was an example of this type of experiment...explain

What is a single blind experiment...the "teacher" did not know he was not really administering the shocks

the two common measures of variance

What is range and standard deviation

numerical methods used to determine whether research data support a hypothesis or whether results were due to chance

What is inferential statistics

Measures of central tendency...explain

What are mean, median, and mode

research method that involves an intensive investigation of one or more participants

What is a case study

a change in a participant's illness or behavior that results from a belief that the treatment will have an effect, rather than the actual treatment

What is the placebo effect

Researchers' results are said to be statistically significant

when results are less than 5% due to chance

a graph of frequency distribution shaped like a symmetrical, bell-shaped curve

What is a normal curve

Before starting an experiment researchers are required to submit a plan to a Human Subjects Committee for approval or rejection of the experiment based on...

What is ethics