A study about the collapse of these groups was criticized in a work by William Ryan that coined the term “blaming the victim.” One thinker defined stages of these groups including “pairing” and “punaluan.” One controversial study posited that the structure of these groups constituted a “tangle of pathology” that reinforced a “culture of poverty.” That report (15[1])titled for these groups (-5[1])was written by Lyndon (15[1])Johnson’s Assistant (15[1])Secretary (-5[2])of Labor (*) Daniel Moynihan. (-5[1])A book (-5[2])on the Origin of [these groups], Private Property, and the State was written by Friedrich (10[1])Engels. (10[1])Lewis Henry Morgan described the consanguineal type of these groups that indicates shared blood. For 10 points, (10[1])name these units whose “nuclear” variety (10[2])consists of parents (10[2])and their children. ■END■ (10[2])