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What is Psychology? (new)
- It is the scientific studey of behavior and mental processes.
- -(Study of the Mind and Brain)
- -Comes from Philosophy and Biology
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Aristotle
- Naturalist/Philosopher
- Suggested soul and body are NOT separate
- Knowledge grows from experience
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William Wundt
- Developed 1st psychology lab in 1879
- Studied the mind objectively and scientifically
- Father of INTROSPECTION.
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Introspection ( Self Observation)
Method in whice trained observers reflect and report their mental experiences.
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Edward Titchner
- Father of STRUCTURALISM
- 3 Basic Elements: Sensation, Feelings, Images.
- Contribution: Systematic Observations
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Structuralism
School/Theory of Psychology that aimed to identify the basic elements or structures of psychological experience.
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William James
- Offered 1st lecture on Psychology
- Father of FUNCTIONALISM
- Wrote "Principles of Psychology" 1890
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Functionalism
School/ Theory of pscyhology that aimed to understand the adaptive purposes/funtions of mental and behavioral processes. (adapt, survive)
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John B. Watson
- Father of BEHAVIORISM
- Baby Albert experiement
- Said psychology is observable, measurable behavior.
- 1st student to recieve Ph.D in psychology.
- Turned away from conciousness.
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Behaviorism
Aims to uncover the laws of learning by looking outside the organism such as REWARDS & PUNISHMENTS in environment.
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B.F. Skinner
- Studied with Watson
- Carried on Behaviorism
- Pigons, Rewards, and Punishments
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What is Psychology by the earlier days definition?
Science of mental life.
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Jean Piaget
- Swiss psychologist- childrens adaptations
- Father of COGNITIVISM.
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Cognitivism
That seeks to describe the mental processes involved in thinking that affects behavior.
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Sigmund Freud
- Austrian physician, neuroligist
- Father of PSYCHOANALYSIS.
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Psychoanalysis
Attributed thoughts and actions to unconscious motives and its effects on human behavior.
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Humanistic Psychology
- Maslow & Rogers
- It emphasizes how current environmental influences affect one's growth potential and need for love and acceptance.
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Psychology's Biggest Question
Nature(biology) vs. Nurture(environment) -most controversial
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Psychology's 3 Main Levels of Analysis
- 1. Biological- genetics
- 2. Psychological- emotions, responses
- 3.Social/ Cultural- environment
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Counseling
Assists people with problems in living (crisis & challenges) and improves their personal and social functioning.
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Psychiatrist
Prescribes medicine
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Naive Realism
- We see the world as it is.
- We trust out perceptions, but its decieving.
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Cognitive Biases
Hindsight bias, Overconfidence, Heuristics, Belief Perseverance, Critical Thinking.
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Hindsight Bias
Tendency to overestimate no well we could have successfully forecasted known outcomes.
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Overconfidence
Tendency to overestimate our ability to make correct predictions.
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Heuristics
Mental shortcuts that help us make judgments, solve problems, and make sense of out world.
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Belief Perseverence
The tendency to stick to our initial beliefs even when evidence contradicts them.
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Critical thinking
- A set of skills for evaluationg all claims in an open-minded and careful fashion.
- It examines assumptions, discerns hidden values, evaluates evidence and assess.
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Scientific Method
The formulation and experimental testing of hypothesis about natural events and relationships.
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Hypothesis
- A testable prediction, often dirived from a theory, to enable us to accept, reject or revise the theory.
- Directs our research
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Case Study
A research design that examines one person or a small number of people in depth, over an extended time period to reveal underlying behavioral principles.
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Naturalistic Observation
Watching behavior in real world settings.
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Correlational Design/ Research
- When one trait or behavior accompanies another we say the two correlation.
- CORRELATION DOES NOT IMPLY CAUSATION.
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Experiement
A controlled condition in which an independent variable is manipulation and changes in a dependent variable are studied.
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Experiemental Design includes
- 1. Random Assignment of participants
- 2. Manipulation of Independent variables
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Experimental group
Recieves manipulation
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Control group
Does not recieve the manipulation
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Independent Variable
- A factor manipulated by the experimenter.
- The effect is the focus of the study.
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Dependent Variable
A factor that may change in response to an independent variable.
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Standard Deviation
A computed measure of how much scores vary around the mean.
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When is an Observed Difference reliable?
- 1. Representative samples are better than biased samples.
- 2.Less-variable observations are more reliable than more variable ones.
- 3. More cases are better than fewer cases.
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Biological Psychology
Study of brain and behavior
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Neuron
- Individual nerve cell that form the basic structure of the nervous system.
- Recieves and send messages.
- "Brains Communicators"
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Sensory Neurons
Carry INCOMING messages to brain/spinal cord
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Motor Neurons
Carry OUTGOING information from CNS to muscles and glands.
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Interneurons
- Carry messages from one neuron to another.
- 99% of the work
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Cell body
Life suppor center of the neuron
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Dedrites
- Branching extenstions of cell body
- Recieving portion of neuron.
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Axon
- Sending portion of neuron.
- Covered by myelin sheath.
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Myelin Sheath
Fatty covering of axon that insulate neuron signals, speeds up messages through neurons
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Threshold
Level of stiulation required to trigger a neural impulse
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Synapse
Junction between axon tip of sending neuron and the dendrite or cell body of recieving neuron.
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Neurotransmitters
Chemical messengers secreted by neurons whice are released at the synapse and alter activity in the recieving neuron inspecialize in communication.
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How do Neurotransmitters influence us?
They affect certain behaviors and emotions.
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Central Nervous System
Brain and Spinal Cord
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Peripheral Nervous System
- The sensory and motor neurons that connect the CNS to the rest of the body.
- Nerves extend outside the CNS.
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Somatic Nervous System
Controls the voluntary movements of the body's skeletal muscles and behavior.
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Autonomic Nervous System
- Controls the glands and other muscles of internal organs.
- Helps us experience and express emotions.
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2 Nervous Systems under Autonomic
- a. Sympathetic NS- AROUSES the body, mobilizing its energy in stressful situations.
- b. (Division os the ANS) CALMS the body, conserving its energy, active during rest and digestion.
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Nerves
- Are neural "cables" containing many axons.
- Part of PNS.
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Endocrine System
- The body's "slow" chemical communication system.
- Carried out by hormones synthesized by a set of glands.
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Hormones
Chemicals secreted by the endocrine glands that produce physical or psychological changes.
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Pituitary Gland
- "Master Gland"
- Controls the hypothalamus and other bodily glands.
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Forebrain( Cerebrum)
The forward part which is most highly developed area in human brain controls advanced intellectual abilites.
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Cerebral Cortex
- Largest component of the forebrain.
- Responsible for higher brain function-ability to talk, think, and reason.
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Parts of Cerebral Cortex
- Frontal Lobe-front, motor function, language, abstract thinking, memory
- Parietal Lobe- Top back, sensory input for touch, motor functions, connecting vision.
- Occipital Lobe-Vision, taking in
- Temporal Lobe- Hearing, language, comprehension
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Thalamus
- Sensory switchboard that processes sensory information.
- Located at top of brainstem.
- Acts as sensory GATEWAY to cerebral cortex.
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Medulla
- Located closest to the spinal cord.
- Involves with reflexes and vital functions as swallowing, heartbeat, and breathing.
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Hindbrain(Cerebellum)
- "Little Brain"
- A miniature version of the cerebral cortex.
- It's main functions are its responsibility for balance, motor skills, and coordination of movement.
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Limbic System
- Emotional center of the brain that also plays roles in smell, motivation, and memory.
- Autonomic
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Hypothalamus
- Body temperature, thermostat, regulates body emotions.
- Constant internal bodily state.
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Left side of Brain
Reading, writing, math, communication, comprehension
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Right
Artistic, creative, imagionative
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