the genetically influenced weight range for a individual; it is maintained by biological mechanisms that regulate food intakeoBMR and number of fat cells influence a set pointBasal Metabolism Rate BMRoThe rate at which the body burns calories for energyGenes:oOb causes fat cells to secrete a protein called leptinoLeptin travels through the blood to the brain’s hypothalamus, which involved in appetiteoDecreasing leptin levels can cause overeatingoGhrelin spurs appetiteoLeptin reduces appetiteMany people are overweightEnvironmental Influences on Weight:oIncreased Abundance of Fast Food and Processed FoodsoWidespread consumption of high sugar, high calorie soft drinksoThe sharp decline in excerise and other expenditures of energyoIncreased portion sizes of food and drinkoThe abundance of Highly varied foodsEating Disorders:oBulimiaAn eating disorder characterized by episodes of excessive eating (bingeing) followed by forced vomiting or use of laxatives (purging)oAnorexia:An eating disorder characterized by fear of being fat, a distorted body image, radically reduced consumption of good, and emaciationoOccur mainly in white females
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oBiological factors (genes), psychological factors (depression), cultural factors (some cultures don’t know these disorders exist), and individual habits (athletes, models)Motives to LovePassionate Love - intense emotions and sexual passion (dopamine increases)Companionate Love - affection and trustPET and fMRI have shown that different parts of the brain light up when they are activeOxytocin & VasopressinoBoth play a crucial role in the attachment-caregiving system Between mother and child as well as friends and suchEndorphinsoChemical substances in the nervous system that are similar in structure and action to opiatesoThey are involved in pain reduction, pleasure, and memory and are technically known as endogenous opioid peptidesofMRIs show difference in child love and partner love different parts of the brainTwo strong predicaments of People:oProximity EffectThe people who are nearest to you geographically are most likely you be dearest to youoSimilarity EffectSimilarity - in looks, attitudes, beliefs, values, personality, and interests – is attractive to human beings; we tend to choose friends and loved ones who are most like usDating websites use thisAttachment Theory of LoveoPeople’s attachments styles as adults derive in large part from how their parents cared for themoThree Different Attachment Styles: (exist through entire life)Secure64%warm close relationships with their parentsAvoidant23%entirely negative terms about parents (cold and rejecting parents)resistant to change Anxious11%ambivalence towards their parents (harsh and kind)Many gender difference when in comes to loveoMotives of lover reflect social, economic, and cultural forcesoWestern societies, women often express love in words, where men do actionsoOverall, sexes have become more alike in endorsing romantic love
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