Darwin from Descent of Man to Emotions under Domestication" which went on sale on 30 January 1868. He now published his ideas on human evolution and on how beautiful but apparently impractical features could have evolved in "The Descent of Man, and Selection in Relation to Sex". After revising "The Origin of Species" as the definitive 6th edition, his major works on species culminated in "The Expression of the Emotions in Man and Animals". This period was followed by extensive work on insectivorous plants and research into worms. Despite Darwin's concerns that his children were weakened as his wife Emma Darwin was his cousin or had inherited
Emotions and culture but the patterns are social constructions. Some also theorize that culture is affected by emotions of the people. Research on the relationship between culture and emotions dates back to 1872 when Darwin argued that emotions and the expression of emotions are universal. Since that time, the universality of the six basic emotions (i.e., happiness, sadness, anger, fear, disgust, and surprise) has ignited a discussion amongst psychologists, anthropologists, and sociologists. While emotions themselves are universal phenomena, they are always influenced by culture. How emotions are experienced, expressed, perceived, and regulated varies as a function of culturally normative behavior by the surrounding