experimental method

Question 1

Experimental method

Answer 1

involves the manipulation of the independent variable to measure the effect of the dependent variable. Experiments may be laboratory, field, natural or quasi

Question 2

aim

Answer 2

a general statement of what the researcher intends to investigate, the purpose of the study

Question 3

hypothesis

Answer 3

a clear, precise, testable statement that states the relationship between the variables to be investigated. Stated at the outset of any study.

Question 4

directional hypothesis

Answer 4

states the direction of the difference or relationship

uses words such as more or less, higher or lower, faster or slower are very commonly used.
- Researchers will use this when previous studies predict a particular outcome
- One tailed, has an evaluative effect

Question 5

non-directional hypothesis

Answer 5

does not state the direction of the difference or relationship

the nature of the difference is not specified.
- Researchers will use this when there are no previous studies
- Two tailed, never know which way its gonna go

Question 6

variables

Answer 6

any ‘thing’ that can vary or change within an investigation. Variables are generally used in experiments to determine if changes in one thing result in changes to another

Question 7

opperationalisation

Answer 7

clearly defined variables in terms of how they can be measured

Question 8

random sampling

Answer 8

is a sampling technique where every member of the target population has an equal chance of being selected.

Question 9

steps to how to set up an experiment

Answer 9

Create initial idea
Narrow the focus to create an aim
Formulate a hypothesis
Begin experiment

Question 10

what are aims developed from

Answer 10

sophisticated theories

Question 11

experimental hypothesis

Answer 11

statement of what is to be tested

Question 12

null hypothesis

Answer 12

statement of no effect or relationship