Related Experiment Video

Updated: May 10, 2026

Assessing Dyslexia at Six Year of Age
15:00

Assessing Dyslexia at Six Year of Age

Published on: May 1, 2020

Different patterns, but equivalent predictors, of growth in reading in consistent and inconsistent orthographies

Markéta Caravolas1, Arne Lervåg, Sylvia Defior

  • 1School of Psychology, Bangor University.

Related Concept Videos

Group Design02:01

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between the two are due to...