U ovome se radu istražuje utjecaj obilježja predočivosti na semantičko procesiranje riječi u
zadacima s pisanim i auditivnim stimulusom. Rezultati osoba s afazijom pritom su
uspoređeni s rezultatima osoba bez jezičnih poteškoća. Za potrebe istraživanja korištena su
tri testa iz baterije testova PALPA: Procjena auditivne sinonimije, Procjena pisane sinonimije
i Test semantičkih asocijacija čiji je ispitni materijal oblikovan prema stupnju predočivosti
stimulusa. Sukladno hipotezi, uočena je značajna razlika u uspješnosti eksperimentalne i
kontrolne skupine na svim testovima, pri čemu je eksperimentalna skupina u prosjeku
ostvarivala lošije rezultate i to ponajprije u dijelovima zadataka koji su obuhvaćali nisko
predočive riječi. Rezultati istraživanja interpretirani su prema modularnome modelu PALPA
dovedenom u odnos s hipotezom o dostupnosti konteksta i teorijom dvostrukoga kodiranja.
Poteškoće u prepoznavanju nisko predočivih riječi kod osoba s afazijom uzrokovane su
otežanim pronalaženjem odgovarajuće reprezentacije u mentalnom leksikonu govornika u
kojemu su aktivirani različiti mentalni putovi obrade jezičnih podataka ovisno o modalitetu
u kojem je riječ predstavljena.The lexical feature of imageability is a semantic category of a word which refers to the greater
or smaller degree of picturability of a lexeme. While high imageable words are easier to
imagine as they evoke a relatively clear mental picture, low imageable words are harder to
imagine as they are more abstract. In this paper, we will present the results of the research of
lexical processing of spoken and written word in relation to the feature of imageability
conducted on the sample of 25 people with aphasia and on 21 participants of the control
group. The study investigates whether there is a significant difference in the semantic
processing of high and low imageable words in people with aphasia compared to the
participants of the control group when presented with a visual or auditive stimulus. The
research is motivated by two hypotheses. Firstly, the greater asymmetry in semantic
processing of high and low imageable words will be found in people with aphasia compared
to the participants of the control group; and secondly, the processing of low imageable words
will be less successful in both groups. The research was conducted on the basis of three tests
designed to examine the processing of the lexical feature of imageability: Auditory Synonym
Judgements, Written Synonym Judgements and Word Semantic Association from the battery
of tests PALPA (Psycholinguistic Assessments of Language Processing in Aphasia, Kay at al.,
1992), translated into Croatian language and adapted for Croatian speakers. Both hypotheses
were confirmed by the results of quantitative (statistical) and qualitative (linguistic –
semantic) analysis. Modality dependent pathways of mental processing were interpreted
according to the modular model on which PALPA tests were based contextualized within
dual-coding theory and context availability theory. The problems with the recognition of the low imageable words are caused by the difficulties in finding appropriate semantic
representations in the mental lexicons of speakers. (Balota et al., 2006) This study examines
to which extent the abstractness of a word influences its recognition as well as explores how
the imageability feature is incorporated in the processing of meaning in the mental lexicon
