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This 4 page Class Notes was uploaded by Joey Hathaway on Wednesday February 18, 2015. The Class Notes belongs to PSY101 at Michigan State University taught by Dr. Richard Lucas in Fall. Since its upload, it has received 90 views. For similar materials see Introductory Psychology in Psychlogy at Michigan State University.
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Date Created: 02/18/15
PSY 101 LECTURE 3 short quiz on D2L re iCIickers Confirmation Bias Focus on times when prediction is confirmed Ignore time when prediction is not confirmed Even explain away times when it s not Illusory Correlation The perception of a relationship where none exists The Research Process 1 theories 2 lead to hypothesis 3 research amp observations 4 generate or refine theories 5 repeat Correlation Coefficient r Tells us the direction of the association positive or negative Tells us the strength of the association closer to 1 perfect correlation O no association MAJOR THEME 1 CORRELATION 95 CAUSATION To determine causality o The investigator manipulates one or more factors independent variables to observe their effect on some behavior or mental process dependent variable 0 The experimenter controls for other relevant factors by using RANDOM ASSIGNMENT of participants to conditions PSY 101 LECTURE 4 126 Features of an Experiment 0 Random assignment 0 Independent variable the one being studied o Dependent variable 0 r degree of correlation Observation bias People behave differently when they re being studied Inputs and Outputs to the Brain Input lines Arteries and afferent nerves Output lines veins and efferent nerves Reception lnteg ration Reaction Arteries bring glucose brain C02 and hormones to the Central Nervous System Veins Hormones brain spinal cord Afferent nerves carry plus kinesthesia interoception information of the 5 senses Efferent nerves trigger voluntary muscles involuntary muscles endocrine glands 39t Nervous System gt Central brain spinal cord gt Peripheral I Somatic controls voluntary action I Autonomic controls selfregulating action of internal organs glands o Sympathetic arousing fightorflight redistributes resources to prepare for stress faster heartbeat inhibits digestion stimulates secrection of epinephrine norepinephrine o Parasym pathetic O calms body down again 9 takes care of digestion and stuff 9 stimulates sex organs 9 contracts pupil 9999 MAJOR THEME 2 ANTAGONISTIC SYSTEMS PUSH AGAINST EACH OTHER TO REACH A SHIFTING BALANCE POINT NEURONS and SYNAPSES Terminal branches of El n 7 term junctinns with other EEHE l Ei ldiTi lES r receive messages 39 hum other tells Marni passes messages away frnm the cell nally in either neurcns r 39 musclesnrgliamdl 1 Cell hardy i r the EEllllt a lljfE L whim nteri quot Myelin sheath leavers the HEDiFI ni sume 39 39 39 r neuronsahd helps speed l 9 lHl39El lrall impulse neural imlplulEEEj A n l 39 quot il elrertritalisignaltraveling down the axiom Dendrites receive messages Cell body collects input from dendrites if reach critical threshold gt launch pulse down axon Axon carries messages away Action potential travels around 2070 ms much slower than speed of sound Electrochemical Signal if voltage exceeds certain threshold a wave of depolarization spreads along the axon Synapse 1 Neurotransmitters travel from axon terminals to dendrites 2 Float across synaptic cleft 3 Latches onto receptor site of receiving neuron 4 Neurotransmitters reabsorbed into presynaptic neuron Lower Level Brain Structures Medulla handles breathing salivation etc Reticular formation filters sensory information Thalamus consciousness sleep alertness Cerebellum controlling fine motor movements posture Limbic System last layer of old brain Amygdala aggression amp fear Hippocampus memory Hypothalamus very important to psychologists motivations hunger thirst sex Cerebral Cortex Frontal lobe FRONT abstract thinking planning social skills Parietal lobe TOP touch spatial thinking Occipital lobe BACK vision Temporal lobe UNDER language heanng visual pattern recognition
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