Holzel et al

Identify two characteristics of the sample used in Holzel et al.

Explain how the researchers operationalised one dependent variable in this study.

Outline one result from Holzel et al relating to the amount of mindfulness practice engaged in by participants in the experimental group.

Participants in this study had two brain scans, 8 weeks apart.

How might order effects have affected the data in this part of the study?

With reference to Holzel et al, out line what it meant by 'measure of central tendency'.

With reference to Holzel et al, out line what it meant by 'measure of spread'.

The researchers wondered whether there would be a relationship between time spent on mindfulness activities over the 8 weeks and increase in grey matter concentration.

Explain why this part of the study was a correlation.

Also, explain one disadvantage of using correlation to explore this.