The Arapesh and Mundugumor tribes, described by Margaret Mead, agree in making little differentiation on a sex role basis. Differences that occur between individuals are not "sex-linked." A third tribe studied by Mead offers an example of a clear case of sex role reversal between men and women. This occurred among the Tchambuli partly as a result of the imposition of the "Pax Britannica", which outlawed tribal wars. The warriors lost their traditional role and became largely decorative in society. The economic support of the society still depended upon the women and their status, in consequence, improved. In the words of one commentator - ". . . the woman emerges as the dominant, impersonal managing partner, secure and cooperative, while the man develops into a less responsible and emotionally dependant person, prone to petty bickering and misunderstandings." Sex role reversal, insofar as it affects parental function, has also been noted among the Manus.