Psychology A-Level
floor and ceiling effects
What floor and ceiling effects means in Psychology A-Level, as defined for OCR.
Definition of floor and ceiling effects
Check what you remember
Read the wording for your board, then hide it and explain floor and ceiling effects in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The usual cause of skew in psychology, where a task almost everyone completes gives a negative skew and one that defeats most participants gives a positive skew.
Topics that use floor and ceiling effects
- D.1 – handling data (OCR A-Level)
Related terms
- bar charts and histograms
- calculating tests of difference
- central tendency on a curve
- checking data quality
- co-variables
- comparing two conditions
- content analysis
- correlation coefficients
Using floor and ceiling effects in the exam
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