turesandprocesseswhichunderlineahuman’sabilitytospeakandunderstandlanguage.Psycholinguistsarenotnecessarilyinterestedinlanguageinteractionbetweenpeople.Theyaretryingabovealltoprobeintowhatishappeningwithintheindividual.ThescopeofpsycholinguisticsAtitsheart,psycholinguisticworkconsistsoftwoquestions.–Whatknowledgeoflanguageisneededforustouselanguage?–Whatprocessesareinvolvedintheuseoflanguage?The“knowledge”questionFourbroadareasoflanguageknowledge:Semanticsdealswiththemeaningsofsentencesandwords.Syntaxinvolvesthegrammaticalarrangementofwordswithinthesentence.Phonologyconcernsthesystemofsoundsinalanguage.Pragmaticsentailsthesocialrulesinvolvedinlanguageuse.Itisnotordinarilyproductivetoaskpeopleexplicitlywhattheyknowabouttheseaspectsoflanguage.Weinferlinguisticknowledgefromobservablebehavior.