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发布时间:2023-11-12 04:24:56   来源:文档文库   
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PSYCHOLOGY5学习LEARNINGIntroductiontoPsychologyDepart.Psycho.PekingUniversityGarciaetal1985狼和羊的故事含氯化锂的羊肉汉堡包==恶心羊进入狼的地盘约一小时之内,狼尝试多次,但无攻击什么改变了狼的天性?本能行为通过遗传获得,不学就会的行为。母鸡孵蛋、蜜蜂酿蜜、婴儿吸奶药物操作(手脚)学习!----习得行为----习得行为和本能行为的混合体OutlinesWhatislearning?ClassicalConditioningOperantConditioningCognitive-SocialTheory1Whatislearning?1.1DefinitionLearningreferstoanyenduringchangeinthewayanorganismrespondsbasedonitsexperience.因为经验而使有机体的反应方式产生持久的改变疲劳、药物、疾病和损伤不属于学习范畴KeyElementsofLearningAchangeinbehaviororbehavioralpotentialArelativelypermanentchangeBasedonexperience1.2Whyislearningimportant?Theenvironmentdoesnotstandstill分辨食物与生存环境天性有限(小孩喜欢甜味)TheenvironmentvariesAge,place,culture袒胸露臂与迷你裙老实厚道与无能Humanbeing--Socialanimal知、情感、态度、人格、价值信仰等1.3SharingassumptionsExperienceshapesbehavior经验塑造行为Learningisadaptive学习是适应Experimentalresearchonthelawsoflearning2ClassicalConditioning巴甫洛夫(IvanPavlov1849-1936研究狗的消化系统Nobelwinner唾液分泌Salivation反射reflex华生Watson2.1PavlovModelConditioning&Unconditionedreflex学习是一种联系的建立(获得)TheorganismlearnstoassociateCSwithUCSUCS,UCRCR,CRNS,中性刺激,与UCS...Classicalconditioning2.2ConditionedEmotionalResponses触景生情一朝被蛇咬,十年怕井绳秋天的悲沧和凄凉歌曲月亮代表我的心爱在深秋悲伤留给自己心太软Watson&Rayner1920LittleAlbert狗、兔子、白鼠、面具(圣诞老人)NS身后敲击金属棒
UCS跳起来、趴下、呜咽UCR两月之后,小孩怕狗等(泛化)结论:情绪也是习得的2.3ConditionedSocialBehavior释普遍存在的现象望梅止渴大鼠(胰岛素、葡萄糖)休克癌症化疗病人(食物、护士、医院)免疫能力(糖精水)家庭、单位广告环境2.4StimulusGeneralizationandDiscrimination新刺激越接近原刺激,越可能唤起反应这种对类似刺激的反应就是泛化。分化discrimination,是对刺激差异的反应。2.5ExtinctionCS不再与UCS一起出现,条件反应会减弱,这就是消退。即刻恢复spontaneousrecovery泛化、分化和消退的进化适应意义2.6FactorsthatAffectClassicalConditioningTimescheduleforCS&UCSForwardconditioningSimultaneousconditioningBackwardconditioningTheIndividualLearningHistoryHigher-orderconditioningBlockingeffectKamin,1969PreparednesstoLearn(进化的角度)电击避光、声,不避味道X不避光、声,避味道Garcia&Koelling,19663OperantConditioningEdwardL.Thorndike:LawofEffectS-Rconnection尝试-错误机制blindtrial-error行为倾向取决于该行为产生的环境效果LawofeffectInstrumentalconditioningB.F.Skinner:OperantConditioning习是一种反应概率上的变化,而强化是增强反应概率的手段。3.1OperantsandConsequenceOperants:Emitted/ElicitedInstrumentalconditioningThorndikeConsequenceReinforcementPunishment3.2ReinforcementMakingtheresponsemorelikelytorecurTwokindsofReinforcementPositiveReinforcement提供奖赏NegativeReinforcement终止一个负面刺激(负面强化物)3.3PunishmentDecreasestheprobabilitythataresponsewillrecurPositive&NegativePunishmentCommonProbleminUsingPunishment惩罚效果差的原因惩罚与操作难以对号对惩罚人而非受罚行为害存在其他奖励惩罚受(领导)长辈的情绪所左右(一致性差)攻击性惩罚导致更多的攻击行为建议:惩罚+说理(或强化)3.4SchedulesofReinforcementContinuousreinforcementschedulePartialorIntermittentschedulesRatioschedulesFixedRatioVariableRatioIntervalschedulesFixedIntervalVariableInterval3.5FactorsAffectingOperant

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