Editing Interference theory (section)

====Word tasks====
Retroactive Interference increases when the items are similar, therefore increasing association between them as shown by [[spreading activation]].<ref name = Barnes>{{cite journal | last1 = Barnes | first1 = J.M. | last2 = Underwood | first2 = B.J. | year = 1959 | title = Fate of first list association in transfer theory | journal = Journal of Experimental Psychology | volume = 58 | issue = 2| pages = 97–105 | doi=10.1037/h0047507| pmid = 13796886 }}</ref> Barnes and Underwood found that when participants in the experimental condition were presented with two similar word lists, the recollection of the first-word list decreased with the presentation of the second-word list.<ref name="Barnes"/> This finding contrasts the control condition as they had little Retroactive Inference when asked to recall the first-word list after a period of unrelated activity.<ref name="Barnes"/>