6. What is a settlement house? What part did settlement houses play in the development of
sociology?

a settlement house is 'an institution in an inner-city area providing educational, recreational, and other social services to the community.'

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

b) the bill goes to the president.

hope this