Task 1: Is arachnophobia (fear of spiders) specific to real spiders or will pictures of spiders evoke similar levels of anxiety? Twelve arachnophobes were asked to play with a big hairy tarantula spider with big fangs and an evil look in its eight eyes, and at a different point in time were shown only pictures of the same big hairy tarantula. The participants’ anxiety was measured in each case.

The data are in Big Hairy Spider.sav. Do a t-test to see whether anxiety is higher for real spiders than for pictures. ①