UNIT 0 PART 2

Hindsight bias

Is the belief after leading the outcome that you were correct all along

Theory

An explaination using an integrated set of principles that organized observations and predicts behaviours or events

Operational definition

Precise, defined explainations of procedures and concepts used in an experiment that allow other scientists to replicate the research.

Case study

A techniques in which one individual or group is studied in depth in hope of revealing things that are true for everyone

Naturalistic observations

A technique of watching the observing subjects in their natural environments without trying to manipulate the. Environment

Survey method

A teachniqes for getting self reported attitudes r behavior of a particular group, usually by questioning a representative or random sample of the group

Sampling bias

A flawed sampling process that produces an unrepresentative sample

Population

All in the group who is being studied, from which sample may be drawn

Random sample

A sample that fairly representes a population because each member has an equal chance of inclusion

Correlation

Expresses a relationship between two variable

Correlation coefficient

A statistical index of t he relationship between two things (from -1.00 to +1.00) relationship gets weakened the closer you get to the index gets to 0

Variable

Scatterplot

Illusory correlation

Perceiving a relationship when none exists, or perceiving a stronger- than-actual relationship

Regression toward the mean

The tendency for ectreme or unusual scores or events to fall back (regress) towards the average

Experiment

The group exposed to the treatment

Control group

The group not exposed to the treatment, a contrast to the experimental group, serving as a comparison for evaluation the effect of the treatment

Random assignment

Assigning participants to experimental and control group randomly

Double blind procedure

An experimental procedure where both the research participants and the research staff both don’t know whether the research participants have received the treatment or a placebo.

Placebo effect

Participents believes that have gotten the treatments and start to have symptoms even through that have not gotten the treatement

Independent variable

The variable that variable that changes and is being manipulated

Confounding variable

A after otherthat the factor being studies that might influence a study’s result

Dependent variable

The outcome that is being measured

Validity

Does the test or experiment correctly and accurately measure what it claims to measure or predict

Informed consent

Giving potential participants enough information about a study to allow them to chose wether that wish to participate or not

Debriefing

The post explaination of a study to, including its purpose and any deceptions, to its participants

Descriptive statistic

Histogram

A bar graph depicting a frequent distribution

Mode

The most frequent accruing sore(s) in a distribution

Mean

The average of adistribution by adding and then dividing the scored

Medium

The middle socroe in a distribution; put them in order then find the middle number

Skewed distribution

A representation of scored that lack symmetry around ther average value

Range

Te difference between the highest and the lowest. Number

Standard deviation

a cultured measure of how much teh scored vary around the mean sore

Normal curve

(Normal distribution) a symmetrical, bell shaped curve that describes the distribution of meant types og mata

Inferential statistic

Statistical significance

A statistical statement of how likely it is that an abstained results occurred by change