INTELLIGENCE

     WHAT IS IT ?
          PROBLEM SOLVING - REASONING
          VERBAL ABILITY
          SOCIAL SENSITIVITY
          HUMOR ?
          PERCEPTION - EXPERTISE ?
          SCHOOL SUCCESS

     WHAT IS ITS STRUCTURE ?
          SINGLE FACTOR (LUMPERS)
          MULTIFACTOR (SPLITTERS)

     HOW IS IT MEASURED ?
          IQ TESTS (STANFORD-BINET; WECHSLER SCALES)
          NONVERBAL (RAVEN'S PROGRESSIVE MATRICES)
          MULTITEST BATTERIES

     WHAT DOES IQ PREDICT ?
          SCHOOL SUCCESS ?
          WEALTH ?
          JOB SUCCESS ?
          CRIMINALITY ?

     HOW GOOD IS PREDICTION ?
          R
          R - SQUARED

     NATURE - NURTURE
          CORRELATIONAL STUDIES
               PARENT - CHILD
               SIBLING - SIBLING
               TWINS
                    IDENTICAL
                         REARED APART
                    FRATERNAL
          ADOPTION STUDIES
               CHANGES IN MEAN SCORE
               CORRELATIONAL
                    CHILD - BIOLOGICAL PARENT
                    CHILD - ADOPTIVE PARENT