From age 3, sam has been raised by his mother who works at a minimum-wage job. sam lives in a dangerous environment and is attending a failing school. you can predict that sam's iq test results probably reflect more than

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.