escribir un resumen de las paginas 51 hasta la pagina 53 antes mencionadas con su respectiva estructura numero de la pagina donde encontró la lectura, el nombre del libro, nombré del autor

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.