Show:
Research methods
research methods
research methods
research methods
Research methods
100
What is the independent variable?
The variable that is manipulated
100
What is correlation?
Correlation is when there is a relationship between 2 variables
100

Regression toward mean

When extreme scores (very high or very low) are obtained during an initial measurement, the second measurement will be closer to the mean due to high error in first score

100

Spearman Rho

A correlational coefficient that is non-parametric (does not follow normal distribution) and examines the rank order of variables; it looks at the magnitude and direction of the relationship between variables

100
What is a null hypothesis?

The simplistic definition is that the null hypothesis is the opposite of the hypothesis being tested

People who drink coffee before bed will find it hard to sleep

There will be no difference in sleep patterns between people who drink coffee and those that dont


200
What is the dependant variable?
The variable that is measured
200

alternative hypothesis

the hypothesis that we are trying to prove and which is accepted if we have sufficient evidence to reject the null hypothesis

200
What is validity?
The extent to which a study measures what it claims to measure
200

what are the three important steps in creating a clinical prediction rule?

derivation, validation, and impact analysis

200
What is a treatment group?
Those that had a treatment during the experiment
300
What is an extraneous variable?
Another possible factor that might affect the dependent variable
300

ICC

statistical measurement that examines both accuracy and association between variables

300
What is internal validity?
The extent to which a study tests the hypothesis it was supposed to test
300
What is population validity?
Population validity refers to whether the characteristics of the sample are reflective of the wider population
300
What is a control group?
Those that didn't take a treatment so they can be used to compare the treatment group with
400
What is a confounding variable?
A variable that has already affected the DV but was not intended to
400

A instrument with high reliability , which show the following relationship between the SEM and the MDC

smaller MDC -> smaller SEM

400

What is external validity?

How well the study can be generalised to the wider population

400
What is the difference between quantitative and qualitative?
Quantitative data seeks objective knowledge and deals with numbers unlike qualitative data which seeks meaning and context - no numbers
400
What is a placebo?
A sugar pill that the person taking it thinks is the real thing
500
What is a causational relationship?

It means that one variable has a direct result on another.  Lots of research and studies have to be completed to demonstrate this 

eg smoking and lung cancer

smoking is the variable and the direct result is lung cancer

500

What is a strong positive correlation coefficient?

.08

500
What is reliability?

The extent to which a study has been replicated to ensure the results are not just luck

If a study gets the same results again and againit is said to have test-retest reliability

500
What is a hypothesis?

A hypothesis is a testable statement that is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it.  A working hypothesis is a provisionally accepted hypothesis proposed for further research.

500

What is a double blind study?

Both researcher and participant do not know what treatment group they are in.