Although it is commonly believed that in Persian the verb agrees with the subject, several constructions seem to constrain this obligatory rule. Adopting the framework of Distributed Morphology, the author argues that agreement is in fact obtained with the plural inanimate subjects but a morphological rule may block the result. Unlike the previous analyses which consider the experiencer as the subject of the psychological constructions, the author argues that the psychological state is the subject of the sentence. The findings of this book not only contribute to better understanding of Persian syntax, but also have important implications for grammar theory.