Editing Interference theory (section)

====Effects of age====
In both [[short-term memory]] and [[long-term memory]] Smith measured output interference in three age groups (aged 20–39, 40–59, 60–80 years).<ref name = Smith2>{{cite journal | last1 = Smith | first1 = A.D. | year = 1975 | title = Aging and Interference with Memory | journal = Journal of Gerontology | volume = 30 | issue = 3| pages = 319–325 | doi=10.1093/geronj/30.3.319| pmid = 1120895 }}</ref> The results of recall performance revealed significant differences due to age where the older group recalled fewer items than the middle group who recalled fewer items than the youngest group.<ref name="Smith2"/> Overall Smith concluded that memory decline appears with increased age with long-term memory forgetting rather than short-term memory forgetting and short-term memory was unaffected by age. However, output interference was unable to explain the memory deficit seen in older subjects.<ref name="Smith2"/>

Recent research of adults [[free recall]] and cognitive triage displayed similar findings of recall performance being poorer in older adults compared to younger adults.<ref name= Marche>{{cite journal | last1 = Marche | first1 = T.A. | last2 = Howe | first2 = M.L. | last3 = Lane | first3 = D.G. | last4 = Owre | first4 = K.P. | last5 = Briere | first5 = J.L. | year = 2009 | title = Invariance of Cognitive Triage in the Development of Recall in Adulthood | url = http://openaccess.city.ac.uk/4212/3/Marche%20Howe%20et%20al%20accepted%20Memory%20paper%202009.pdf| journal = Memory | volume = 17 | issue = 5| pages = 518–527 | doi=10.1080/09658210902939355| pmid = 19468958 | s2cid = 13770995 }}</ref> Although it was also indicated that older adults had an increased susceptibility to output interference compared to younger adults and the difference increased as additional items were recalled.<ref name="Marche"/>