levo

Planning Psychological Research

Experimental design

  • 3 things to know
  • Component 2

Overview

Recall questions on Experimental design.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

What is an independent groups design?

Evaluation

Give two weaknesses of an independent groups design.

Key term

What is a repeated measures design?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What does the term experimental design refer to?

    Model answer

    It refers to the way participants are allocated to the different conditions of the independent variable.

  2. 2

    What is an independent groups design?

    Model answer

    Different participants take part in each condition, so each person experiences only one level of the independent variable.

  3. 3

    Give two strengths of an independent groups design.

    Model answer

    There are no order effects because nobody does the task twice, and participants are less likely to guess the aim, which reduces demand characteristics.

  4. 4

    Give two weaknesses of an independent groups design.

    Model answer

    Differences between the people in each group may cause the results rather than the independent variable, and twice as many participants are needed for the same amount of data.

  5. 5

    What is random allocation and why is it used in an independent groups design?

    Model answer

    It means assigning participants to conditions by chance, for example by drawing names, so that participant variables are spread evenly across the groups instead of piling up in one of them.

  6. 6

    What is a repeated measures design?

    Model answer

    The same participants take part in every condition, so each person provides data at every level of the independent variable.

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.

Biological Approach
Psychodynamic Approach
Behaviourist Approach
Cognitive Approach

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.

Watson and Rayner.
RosalieAlbertDouglas

Blank Blitz makes facts automatic

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

AThe mean of condition A is 15.
BThe mean of condition B is 10.
CThe difference between them is 5.

Build It gets the exam shape right

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

The range uses only the two extreme scores.
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 Planning Psychological Research, 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.