the main scientific approaches to the study of personality theories assessments; reports all now accept that there are lasting individual differences in Scientific method personality dispositions Psychoanalytic Addresses Unverifiable? all accept the influence of the situation unconscious Lacks scientific rigour `interactionism': the person and the situation influence behaviour processes difference mainly in emphasis Humanistic Optimistic; Ignores scientific method;
Related works of Grice's own are collected in Grice (1989). · Bennett (1976) is a valuable defense of the Gricean project by one who was not an insider. MacKay (1972), Black (1973), Rosenberg (1974: ch. 2), and Biro (1979) are critical of Grice. 8 Verificationism Overview According to the Verification Theory, a sentence is meaningful if and only if its being true would make some difference to the course of our future experi- ence; an experientially unverifiable sentence or "sentence" is meaningless. More specifically, a sentence's particular meaning is its verification condition, the set of possible experiences on someone's part that would tend to show that the sentence was true. The theory faces a number of objections: it has ruled a number of clearly meaningful sentences meaningless, and vice versa; it has assigned the wrong meanings to sentences that it does count as meaningful; and it has some dubi- ous presuppositions
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