USING META-ANALYTIC TECHNIQUES TO MEASURE PSYCHOLOGICAL CHANGE
IN PRIMARY STUDIES

Aim

Everything Depends On

Outline

The Significance Testing Controversy

Which is More Impressive?

"Statistical significant testing has been..."

"Calls for a shift away..."

The Four Possible Outcomes of a Significance Test

Power

"ďDespite numerous efforts to..."

"Ways of Measuring Psychological Change"

"Ways of Reviewing Research on..."

"Psychotherapy Debate"

What is Meta-analysis?

Effect Sizes

Effect Sizes

Cohenís d

Cohenís d

Interpreting Effect Size (d)

Interpreting Effect Size (d)

Interpreting Effect Size (d)

Comparative Effect Sizes (d)

Slide 24

OE Effect Sizes (d)

Slide 26

Interpretation of Outdoor Education Effect Sizes (d)

Other ES Interpretations

Confidence Intervals

Graphing ESs & Confidence Intervals

Everything Still Depends On

Looking Into The Future

Conclusions

References

References