Motivation Feeding Behavior and Sexual Behavior Beyond the Basic Model of Feeding A Social influences B Undereating anorexia don t want to eat any food in most of the time and bulimia eat huge amount of food in a short period of time Biological factors hypothalamus serotonin Cognitive cultural factors Perfection low self esteem exposure to Western media C Overeating obesity psychological Influences on Obesity what psychological factors lead to overeating environment toxic food environment Brownell 2004 1 Rozin et al Portion size unit bias 2 Food engineering in order to make a perfect ratio of salt souse sugar eventually exceed the drugs Sexual Motivation sex for natural selection A Sexual response Hormones important in many animals e g a dog in heat only sex in a certain time giving a signal I m sexual accept Humans are an exception Primary sex organ is the brain Important conclusions 1 Men and women have similar sexual response cycles excitement blood flow to pelvis increases plateau level of maximum arousal orgasm pleasurable release from sexual tension resolution body gradually returns to pre arousal state 2 Women more variable than men slower to respond but remain aroused longer 3 Some women can have multiple orgasms in a short space of time men rarely can B Sexual arousal Affectional bond relationships in early life Specific gender differences Males visual cues close up sex acts Females touch cues style setting and mood of situation General arousal can be translated into sexual arousal Repeated exposure habituation Sexual Orientation A Common theories of homosexuality don t hold up sexual orientation particularly identification with opposite sex parent first sexual encounter no recruitment into a particular orientation what is predictive Gender conformity nonconformity in childhood B Biological Factors Hypothalamus LeVay s anatomical study Result Hypothalamus in homosexual men is similar to that in women But this is coreelational C Bem s exotic becomes crotic theroty Biological factors influence temperament Temperament predisposes children to prefer some activities over others If a child doesn t conform to gender roles he or she may feel different exotic from same sex peers Feeling different leads to physiological arousal Physiological arousal is later interpreted as sexual arousal erotic