Abstract:Eye fixation patterns for older adults and young adults were monitored as they read sentences containing temporary syntactic ambiguities such as "The experienced soldiers warned about the dangers conducted the midnight raid." Young and older adults' fixation patterns were similar except that older adults made many more regressions to the Subject NP for ambiguous sentences. In a second experiment, high and low span older adults were compared to high and low young adults. First pass fixation times for high and low span readers were similar; however, high and low span readers adopted different processing strategies when they encountered disambiguating information. High span readers were able to quickly resolve the ambiguity whereas low span readers required many regressions to the Subject NP in order to resolve the ambiguity. As a consequence, total fixation times for low span readers were longer than those for high span readers. High span readers were also able to use the focus operator ONLY (e.g., "Only experienced soldiers warned about the dangers…") to immediately resolve the temporary ambiguity. No age group differences were observed. These results are discussed with reference to contemporary theories of the role of working memory in sentence processing.
Text of paper:Eye . Eye fixation patterns of high and low span young and older adults: Down the garden path and back again. Psychology and Aging, 19,[157][158][159][160][161][162][163][164][165][166][167][168][169][170].. Publisher's official version: http://psycnet.apa.org/doi/10.1037/0882-7974.19.1.157. Open Access version: http://kuscholarworks.ku.edu/dspace/.
Eye Fixation Patterns of High and Low Span Young and Older Adults: Down the Garden Path and Back AgainTwo experiments were conducted to provide new data relevant to the on-going debate over the role of working memory capacity limitations in sentence processing and the possibility of age differences in the processing of complex syntactic constructions . This debate has focused on the processing of complex sentences containing temporary syntactic ambiguities, such as "The experienced soldiers warned about the dangers conducted the midnight raid." At issue is whether or not both young and older adults or high and low span individuals experience garden-path effects: an increasing in processing time reflecting the initial misinterpretation of the first verb "warned" as the main verb (MV) of the sentence, rather than as the verb of a reduced relative clause (RRC). Existing studies have been severely criticized on a number of methodological and procedural grounds (see Caplan & Waters, 1999 and subsequent responses).Just and his colleagues Just & Varma, 2002;King & Just, 1991;MacDonald, Just, & Carpenter, 1992) ) have claimed that working memory capacity constrains the interpretation of temporary syntactic ambiguities, limiting the ability of older or low span readers to make and sustain multiple interpretations of the ambiguous phrases. In contrast, Caplan and Waters in another series of reviews an...