MIT OpenCourseWarehttp://ocw.mit.edu 24.910 Topics in Linguistic Theory: Propositional Attitudes Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.24.910, Spring 2009 (Stephenson) 1. Solutions to exercises for last week 2. Think…might exercise (1) Sue thinks it might be raining. (2) Joe thinks that Bush might be president.  Truth Conditions of (1)-(2) ¾ Entailments? ¾ What possibilities does Sue / Joe entertain?  Compositional semantics ¾ [[X thinks that might φ]]w = ¾ [[think-might]]w = ¾ Accessibility relation?  Advanced steps Next steps: How might we try to tease apart the contribution of think and the contribution of might?  [[might φ]]w = Would we need to revise think?  [[X thinks φ]] = 124.910, Spring 2009 (Stephenson) 3. Inference Patterns with Propositional Attitudes [Note: Not all of these express attitudes, but most are intensional]  Factive Predicates ¾ PRED p 〉〉 p ¾ OP [PRED p] 〉〉 p [OP = negation, question operator, …] Examples:  know  be lucky to  discover  realize  forget (that)  see  regret  resent  notice  be glad to  make clear  be proud to  find out  Implicative Predicates ¾ PRED p 〉〉 p ¾ OP [PRED p] 〉〉 OP p Examples:  manage  venture  have the sense  remember  condescend  take the time  bother  happen  take the opportunity  get  see fit  take the trouble  dare  be careful  take it upon oneself  care  have the misfortune  Negative Implicative Predicates ¾ PRED p 〉〉 NOT p ¾ OP [PRED p] 〉〉 OP [NOT p] Examples:  forget  neglect  avoid  fail  decline  refrain  Discussion ¾ Additional properties ¾ Counterexamples to above patterns ¾ Effect of tense, mood, aspect