A very useful exercise to develop critical thinking in psychology is coming up with alternative explanations. Review the results of Draganski et al (2006)—the researchers saw that grey matter increase in the parietal cortex was abrupt: it increased from the rst measurement to the second and stayed on the same level by the third measurement; grey matter increase in the hippocampus was gradual from the rst measurement to the third.

Go online and read more about the known functions of the hippocampus (for example, start with Wikipedia). What alternative explanations of Draganski et al’s (2006)

ndings can you think of? How plausible are they?