Marriages throughout most of the Northwest Coast . were arranged for economic or political reasons might be arranged so a man could obtain rights to songs or dances tried to keep rank within the family all of the above are true

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.