levo

Scientific Processes

Variables

  • 2 things to know
  • Paper 2

Overview

The independent and dependent variables, and what separates a confounding variable from an extraneous one.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

Which variable is manipulated, and which one is measured?

Key term

What separates a confounding variable from an extraneous one?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is an independent variable?

    Model answer

    The variable that is manipulated or changed by the researcher to observe its effect on another variable.

  2. 2

    What is a dependent variable?

    Model answer

    The variable that is measured by the researcher to assess the effect of the independent variable.

  3. 3

    Define extraneous variables.

    Model answer

    Variables other than the IV that could potentially affect the DV if not controlled.

  4. 4

    What does manipulation of variables mean in experimental research?

    Model answer

    The deliberate changing of the independent variable by the researcher to create different experimental conditions.

  5. 5

    Why do researchers manipulate the independent variable?

    Model answer

    To create different experimental conditions so they can observe the effect of the IV on the DV.

  6. 6

    What is meant by control of variables?

    Model answer

    Keeping extraneous variables constant across conditions so that any change in the DV can be attributed to the IV.

Other ways to work this

The same content, four other ways.

What is inside Levo

Six ways to work the same material.

1Closed book
2Open book
3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

Social Influence
Memory
Attachment
Approaches in Psychology

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

The stage comes second.
pre-operationalsensorimotorconcrete

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

AThe mean is the arithmetic average of a data set.
BEvery value in the set is added together.
CThe total is divided by the number of values.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

Imitation means copying the behaviour of a model.
TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Every question in Scientific Processes, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

Or £46 a year, about £3.83 a month. Cancel anytime.