Development Flashcards
Biological aging is due to
metabolic changes
The two types of metabolic changes
anabolism - body building to peak; from birth to about 30
catabolism - body’s slow deterioration from peak to eath
psychological aging
a person’s perception of their age
“feeling old” vs “feeling young”
social aging
how one’s chronological age is viewed within the societal or cultural context; how it is affected by vocation and SES
e.g. Asian countries - old are valued
Epigenetic
The study of changes in organisms caused by modification of gene expression rather than alteration of the genetic code itself
Acknowledging the relationship of nature and nurture
Most developmental theories (Freud, Erikson, Piaget) are epigenetic
Stage theories are an example of…
Discontinuous development (vs. continuous, like Skinner’s operant conditioning)
Discontinuous development
Changes in behaviors and abilities are qualitatively different from previous or subsequent behaviors and abilities
Jumping to qualitatively different and more advanced levels
Ex: Stage theories like Piaget and Erikson
Continuous development
emphasizes small shifts or gradual, sequential changs that occur over time and are difficult to separate
Ex: Skinner’s operant conditioning
Active vs reactive theories
Active theories portray people as active in regulating or governing their behavior (ex: Erikson’s psychosocial theory)
Reactive theories, people are passive and react to environmental stimuli (ex: Skinner’s operant conditioning)
Features of survey research
Large sample sizes ( >100) are needed
Sampling bias can negatively affect generalizability of findings
Cross-sectional design studies
simultaneously examine several groups from differing levels of development (e.g. 5 y.o.s, 10, 15)
Less expensive and take less time than longitudinal studies
May be influenced by “cohort effect” - people born during the same time have similar lived experiences and are qualitatively different from those born years earlier/later; differences that are unique to their age and lead to shared experiences within the cohort
Time-lag studies (AKA ____)
AKA cohort sequential studies
Involve replications of previous studies on a modern-day cohort
Ex: Study of parental discipline style conducted in 1960s is repeated today to see if styles have changed since 60s
Myelination
insulation of neurons to enhance speed of neural transmissions
By age ___, the brain begins to lose neurons
30
The brain is its full adult size by age ___
16
The 3 main areas of the brain and what they do
Hindbrain: life maintenance and survival
Midbrain: connects hindbrain and forebrain, controls eye muscles and relays auditory and visual information
Forebrain - higher-order behavior and conscious thought
Medulla oblongata
Part of the hindbrain
Regulates heart and breathing
Cerebellum
Part of the hindbrain
Regulates balance
Pons
Part of the hindbrain
connects the left and right cerebellum
Reticular activating system
Part of the hindbrain
Regulates arousal and attention
Left hemisphere
Part of the forebrain
Controls the right side of the body
Language and writing
Logical and systematic thought
Right hemisphere
Part of the forebrain Controls the left side of the body Muscle abilities Imagination Emotional expression
Corpus callosum
Part of the forebrain
Bundle of nerve cells that connect the left and right hemispheres
Allows L and R brain to integrate cognitive, emotional, and bodily functions
Cerebral cortex
Part of the forebrain
Covers the L and R hemispheres
Responsible for memory, concentration, problem-solving, muscle coordination
Has 4 lobes
The 4 lobes of the cerebral cortex
Occipital - interpret sensory information through eyes
Parietal - spatial reasoning and sense of touch
Temporal - hearing and storage of permanent memory
Frontal - regulates sense of smell, body control, and movement
Limbic system
Concerned with emotions and motivation
Contains the hypothalamus (pleasure and pain, hunger, thirst, sexual functions, body temp)
Amygdala (behavior and activities - sexual interest, feeding, anger)
Hippocampus - memory
Lateralization AKA ____
AKA hemispheric specialization (left-brain or right-brain dominance) begins early in development and gradually through childhood
Autosomal diseases
Genetic disorders that involve a chromosome other than the sex chromosome
Phenylketonuria
Sickle cell anemia
Tay-Sachs disease (Jews of European descent, can’t metabolize fat)
X-linked diseases
passed on by the X chromosome
hemophilia
Sex chromosomal diseases
Involve a genetic anomaly on the sex-determining pair of chromosomes, usually affecting male or female characteristic displays or sexual reproduction Turner syndrome (XO) - underdeveloped ovaries and incomplete sexual development; short; webbed neck Kleinfelter's syndrome (XXY) - males are tall, high body fat, incomplete sex characteristics; sterile
Ivan Pavlov
Classical conditioning pairs two stimuli, while operant conditioning pairs behavior and response (punishment) Unconditioned Stimulus - Meat Unconditioned Response - Salivating Conditioned Stimulus - Bell Conditioned Response - Salivating
Simultaneous vs. delayed vs. backward conditioning
In classical conditioning
Simultaneous - most effective - US (meat) and CS (bell) are presented at the same time
Delayed - CS (bell) starts first but overlaps presentation of the US (meat)
Backward - US (meat) is presented before CS (bell)
Spontaneous recovery
In classical conditioning, when the CS/CR (Bell and Salivating) connection is reestablished. This led Pavlov to believe that learning is never totally lost or forgotten, just inhibited and waiting to be revived
John B. Watson
“Father of American behaviorism”
“Little Albert”
Paired white rat (CS) with loud noise (US) which resulted in fear (UR) to create fear of rats (CR)
Joseph Wolpe
Applied classical conditioning to psychotherapy
Reciprocal inhibition
A person cannot engage in 2 mutually exclusive events simultaneously. (e.g., anxious and relaxed). The basis for systematic desensitization. Coined by Joseph Wolpe
Systematic desensitization
Treatment for phobias created by Wolpe
Developing a fear hierarchy
Periodically introducing each step while the client maintains a state of relaxation
Uses idea of reciprocal inhibition - the client cannot be both fearful and relaxed at the same time
Counterconditioning
Developed by Wolpe (classical conditioning)
A strong pleasant stimulus is paired with a weak aversive stimulus
Aversive counterconditioning
Developed by Wolpe (classical conditioning)
A very unpleasant stimulus is applied when a maladaptive response is made. Snapping a rubber band when a negative thought comes up.
Flooding
Developed by Wolpe (classical conditioning)
A stimulus that provokes anxiety is continuously presented until the client unlearns the response or becomes too fatigued to respond
Edward L. Thorndike
Beginnings of operant conditioning
Came up with the Law of Effect
Law of Effect
by Thorndike. The beginnings of operant conditioning
When a response (R) accompanying some stimulus (S) is followed by a satisfying reward, a connection is made and the response is likely to be repeated.
The reverse is true as well - if you don’t get a reward, or if you get punished, you won’t do the behavior
B. F. Skinner
Came up with operant conditioning
The premise is very similar to Thorndike’s Law of Effect - a response/behavior is either strengthened or diminished because of the consequence that follows it
Positive reinforcement
Operant conditioning
Adding a stimulus (reward) after a response to increase the likelihood that the behavior will reoccur
Negative reinforcement
Operant conditioning
When removing a stimulus (e.g. loud noise) increases the frequency of a given behavior
Punishment
Operant conditioning
Adding or removing a stimulus to decrease the frequency of a behavior
Reinforcement vs Punishment
Operant conditioning
Reinforcement - Increases behavior
Punishment - Decreases behavior
Positive - stimulus is added
Negative - stimulus is taken away
Reinforcers can be…
(in operant conditioning)
Primary or secondary
Primary reinforcers satisfy a basic need (food, rest)
Secondary reinforcers are anything that is associated with a primary need (e.g., money)
Reinforcement schedules
(in operant conditioning)
Fixed ratio - reinforcer after every Xth response (e.g, 5th)
Variable ratio - reinforcer based on an average of responses (10 is the average, but could be 5, 8, 12, 15) - very effective (like slot machines)
Fixed interval - reinforcer after a fixed period of time (15 seconds) - low response rates (paying by the hour)
Variable interval - interval is varied (pop quizzes)
Which are the most and least effective reinforcement schedules?
Most - variable ratio
Least - fixed interval (based on a fixed period of time - paying by the hour)
Albert Bandura
Developed social learning theory
Observational (vicarious) learning, modeling, self-efficacy
Modeling will be more effective if the model is of the same demographic characteristics and has positive interpersonal characteristics (warm, nurturing)
The 4 components of effective modeling (part of the body)
(In Bandura's social learning theory) Attention Retention (memory) Reproduction Motivation (internal or reinforcement increases the motivation and likelihood of mastery)
John Dollard and Neal Miller
“drive” or incentive theorists
believed that anxiety and psychological disturbances were learned from experiences
Most successful form of conditioning
delayed conditioning, in which the US (meat) turns on with a “short” delay after the CS (bell) turns on
Primary vs secondary drives
Part of Dollard and Miller’s drive theory
Primary drives - innate (thirst, hunger)
Secondary drives - learned (parental approval, peer acceptance)
Piagetian terms
Organization - ability to organize and classify new information, the basis of mental development
Accommodation
Assimilation
Assimilation vs. accommodation
Piagetian terms
Assimilation - adding a thought to an existing framework
Accommodation - interpreting new information in a way that restructures or changes an existing schema
Piaget believed that people learn when they experience ____
Disequilibrium - some conflict or challenge to the person’s way of thinking
People naturally want equilibration - making sense of the new information - through assimilation and accommodation
Piaget’s stages and ages
Sensorimotor (birth - 2)
Preoperational (2-7)
Concrete operational (7-11)
Formal operational (11+)
What happens in the sensorimotor stage?
Piaget
Age birth-2
touching, learn cause-and-effect, trial-and-error, problem solving, and object permenance
What happens in the preoperational stage?
Piaget
Age 2-7
Egocentric thinking, centration or centering, animism, irreversibility
What happens in the concrete operational stage?
Piaget Age 7-11 Using symbols Understand reversibility Reduced ecocentrism But still unable to reason abstractly
What happens in the formal operational stage?
Piaget
Age 11+ but some people never get there
Abstract thinking
Hypothetico-deductive reasoning (deducing a conclusion given a premise)
Lev Vygotsky
Cognitive developmental theory
Zone of proximal development (gap between what children can learn on their own and what they are potentially able to learn with help)
Scaffolding - supports for children to learn
Private speech - starts at age 7 - guides behavior
Types of memory
Sensory or trace memory - environmental stimuli; only retained for a few seconds
Short-term memory - 7+/- 2 items
Long-term memory - relatively permanent
Echoic vs. iconic memory storage
echoic - auditory info
iconic - visual info