PSYCH FINAL Flashcards
What are the steps of the scientific method?
- Identify question of interest
- Gather information - form hypothesis
- Test hypothesis - Conduct research
- Analyze data - draw tentative conclusions
- Build a body of knowledge - build theory and formal statements
Hindsight Understanding
Relies on explanations after the fact
Operational Definition:
defines a variable in terms of specific procedures used to produce or measure
Unobtrusive measures:
Record behavior in a way that keeps participants unaware that certain responses are being measured
Descriptive method:
All variables measured
Examine more natural contexts
Extraneous factors not controlled
Experimental methods:
Cause and effect
Naturalistic observation:
the researcher observes behavior as it occurs in a natural setting
The three components of correlational research
- the researcher must measure one variable, such as peoples’ birth order
- The researcher measures a second variable, such as personality trait
- The researcher statistically determines whether x and y are related
Does correlation establish causation?
NO
Spurious association:
3rd variable problem
Positive correlation:
Positive relationship
As X is increasing, Y is increasing
As X is decreasing, Y is decreasing
Negative Correlation:
Negative relationship - Variables change in opposite directions
As X is increasing, Y is decreasing
As X is decreasing, Y is increasing
Scatterplots:
Positive correlation: Low to high
Zero correlation: scattered everywhere
Negative corrleation: High to low
Depicts the correlation between variables
Shows direction of relationship
Experimental / Control / Random Assignment
Experimental: Recieves a treatment
Control: Not exposed to treatment
Random assignment: A procedure in which each participant has an equal likelihood of being assigned to any one group within an experiment
Independent variables:
Manipulated by experimenter
Dependent variables:
measured by experimenter & influenced by independent variable
Validity:
how well an experimental procedure actually tests what its designed to test
Internal validity:
Degree to which an experiment supports clear casual conclusions
Can be confident that the independent variable really was the cause of differences in the dependent variable
External validity:
the degree to which the results of a study can be generalized to other populations, settings, and conditions
What 5 things must psychologists do when conducting research?
Protect and promote the welfare of participants
Avoid doing harm to participants
Not carry out any studies unless the probable benefit is proportionately greater than the risk
Provide informed consent—
Oral or written consent is usually required & without penalty
Reasonable steps made to ensure consent is not coerced
Ensure privacy and confidentiality
Psycholinguistics:
The scientific study of the psychological aspects of language
(how people understand, produce, and aquire language)
Symbolic language:
allows for forming and transferring mental representations
Grammar:
the set of rules that dictate how symbols can be combined to create meaningful units of communication
Semantics:
The meaning of words and sentences
Generativity:
symbols can be combined to generate an infinite number of messages that can have novel meaning
Displacement: (language)
refers to the fact that language allows us to communicate about events and objects that are not physically present
Phonemes:
Smallest units of sound
46 phonemes in english
Humans can produce 100s of phonemes
Morphemes
smallest units of meaning
more than 100,000 morphemes
Syntax determines how phonemes combine into morphemes
Human language hierarchy:
phonemes
morphemes
words
phrases
sentences
Bottom-Up processing
individual elements of a stimulus are analyzed and then combined to form a unified perception
Top-down processing:
sensory information is interpreted in light of existing knowledge, concepts, ideas, and expectations
speech segmentation - perceiving where each word in a sentence begins and ends
Pragmatics:
A knowledge of the practical aspects of using language
Broca’s area:
speech production
Wernicke’s area:
speech comprehension
Aphasia:
Damage to either the Broca’s or Wernicke’s area
Can infants vocalize phonemes?
Yes 1-3 months old
LASS:
language aquisition support system
Stages of aquiring language:
Cooing
Babbling
Single words
Two words
Linguistic Relativity Hypothesis:
Language determines what we are capable of thinking
Propositional thought:
Expresses a proposition statement of facts
Imaginal thought:
Consists of images we see, hear, and feel
Motoric thought:
Relates to representations of motor movements
Propositional thought:
expresses a statement, such as “im hungry”
Imaginal thought:
consists of images that we can see, hear, or feel in our mind
Motoric thought:
Relates to mental representations of motor movements, such as throwing an object
Example of concepts and propositions:
Concepts: Student > Intelligent people
Proposition: Students > are > Intelligent people
Thought Prototypes:
Most elementary method of forming concepts
Only note similarities
Deductive reasoning:
reason from general principles to a conclusion
Inductive reasoning:
Start with specific facts and try to develop a general principle
The four stages of problem solving:
Stage 1: Interpret (frame) and understand the problem
Stage 2: Generate hypothesis or possible solutions
Stage 3: Test the solutions, hypotheses, seeking to disconfirm one or more of them
Stage 4: Evaluate results and, if necessary, revise steps 1,2, and 3
Framing:
Mental representation
Optimal framing
Mental set:
Tendency to stick to solutions that have worked in the past
Fixated with an approach if it has been successful
Experts:
Large # of schemas to guide problem solving in their field
Better than novices
Expertise:
Feature detectors in brain become quicker and stronger
Algorithms:
Formulas or procedures that automatically generate correct solutions
Mathematical or chemical formulas
Heuristic:
General problem-solving strategies we apply to certain situations
Mental short cuts
Means-ends analysis:
Identify differences between present situation and desired state
Use sub-goal analysis to reach the goal
Representativeness Heuristic:
What does it look like/ seem / represent
How closely something fits prototype for a particular concept
Availability Heuristic:
Judgements and decisions are based on availability of information in memory
Problem- just because information is in the forefront of our memories does not mean it frequently happens
Confirmation Bias:
Look for evidence that will confirm beliefs
Not look for evidence that could disconfirm beliefs
Functional Fixedness
Fixed in perception of proper function of an object
Blinded to new ways to use object
Incubation
Creative solutions pop into mind
Different perspectives may have emerged, sets, biases dissolve
What is wisdom?
Rich factual knowledge about life
Mental rotation
Way to study mental images
Metacomprehension:
Accuracy in judging what you do and don’t know
Metamemory:
Awareness and knowledge of memory abilities
The waitress who served our table said: “Thank you for your order! It’ll be right out.” but her voice was shaky, and her eyes were glassy.
What type of language feature is this?
Extralingusitic information
There’s a running joke in many American sitcoms that Canadians pronounce “about” as “a-boot”.
What language feature is this an example of?
dialect
In the Japanese language, the words “love” and “rub” are difficult to distinguish. In Japanese, the consonants “l” and “r” are pronounced the same. They have no difference in the Japanese alphabet
What feature of language is this an example of?
Phoneme
Latin is used as a base in medical terminology. For example, “-em” (pronounced EE-hm) refers to presence in blood, and “a-“ refers to lack of, “-ia” refers to disorder. For example “anemia” refers to the disorder of a lack of blood, and “anorexia” refers to the disorder in which there is a lack of eating.
What feature of language is this an example of?
Morpheme
In English, we use the order of SUBJECT-VERB-OBJECT in an active sentence, whereas in Japanese, the sentence order is SUBJECT-OBJECT-VERB. e.g. “I ate a pizza.” versus “Watashi wa pizza o tabemashita.”
What feature of language is this an example of?
Syntax
If Asahi wanted to use the same brain areas as native-English speakers when she spoke English, when would she would have had to learn English?
as a toddler
When she was a baby, her parents had an English exchange student visit. When her parents spoke Japanese, Asahi would then suck on her pacifier __________
than when her parents spoke English.
faster
Asahi’s first language is Japanese. She has trouble distinguishing the words “love” and “rub”. This is due to the difference between Japanese and English:
phonemes
Asahi is also a makeup artist and created a YouTube tutorial on methods to apply eyeliner. She recommended using a spoon as a guide to draw the line on the eyelid. The spoon apparently has more than one function. What type of creativity is being displayed?
Divergent thinking
Who is Sir Francis Galton?
Was Charles Darwins cousin
Quantifying mental ability
Mental ability is inherited
Who is Alfred Binet?
French psychologist
Mental tests
Started the modern intelligence-testing movement
Binet’s assumptions of intelligence:
Mental abilities develop with age
Rate at which people gain mental competence is characteristic of the person over time
Stern’s Intelligence Quotient (mental age)
Ratio of mental age to chronological age
IQ+ MA/CA X 100
Who is Lewis Terman?
Revised Binet’s tests
Stanford Binet Test
WW1 used:
Army Alpha (verbal)
Army Beta (non-verbal)
Who is David Wechsler and what intelligence tests did he develop?
Wechsler Adult intelligence scale - WAIS
Wechsler intelligence Scale for Children - WISC
Wechsler preschool and primary scale of intelligence - WPPSI
The Psychometric Approach
Attempts to map the structure of intellect and to discover the kinds of mental competencies that underlie test performance
The cognitive processes approach
Studies the specific thought processes that underlie those mental competencies
Factor analysis:
A factor allows us to infer the underlying characteristic that presumably accounts for the links among the variables in the cluster
What is the “g” factor?
general intelligence - whatever special abilities might be required to perform a particular task.
What are Thurstones’ 7 mental abilities?
Space- reasoning about visual scenes
Verbal comprehension - understanding verbal statements
Word fluency- producing verbal statements
Number facility- dealing with numbers
Perceptual speed- recognizing visual patterns
Rote memory- memorizing
Reasoning- dealing with novel problems
Crystallized intelligence:
apply previously learned knowledge to current problems
Fluid intelligence:
deal with novel situations without any previous knowledge
Carroll’s three stratum model:
cognitive skills are:
general
broad
narrow
Triarchic Theory of Intelligence:
Metacomponents
Performance components
Knowledge-aquisition components
Robert Sternberg:
The triarchic theory of intelligence
Gardener’s 8 Multiple intelligences:
Linguistic
Logical-mathematical
Visuospatial
Musical
Bodily-kinesthetic
Interpersonal
Intrapersonal
Naturalistic
Four branches of emotion detection and control abilities:
Perceiving emotions
Using emotions to facilitate thought
Understanding emotions
Managing emotions
Achievement tests:
designed to discover how much someone knows
Aptitude tests
Measure potential for future learning and performance
Interjudge reliability
consistency of measurement when different people score the same test
The Flynn Effect:
Are we getting smarter?
Outcome bias:
refers to the extent that a test underestimates a person’s true intellectual ability
Predictive bias:
occurs if the test successfully predicts criterion measures, such as school or job performance, for some groups but not for others
Eminence:
A special variety of giftedness
What % of the population is intellectually disabled?
3-5%
The scientific method question:
- Background / Theory - Read up and examine
- Create a testable hypothesis - We ask yes/no question
- Design experiment - Operationalize our variables
- Collect data - Recording reaction time in a task
- Analyze and interpret data - We calculate the average reaction time
- Generate conclusions and publish - Write up report
What number represents negative correlation?
-0.356
What number represents zero correlation?
+0.003
What number represents positive correlation?
+0.402
U-shaped function:
Emerges early - dissapears - re-emerges
Cohort:
group born at the same time
cross-sectional
compare different ages at the same time
longitudinal:
test same cohort at different times
sequential:
test several cohorts as they age
Prenatal development stages:
Germinal - first two weeks, zygote attaches to uterine wall
Embryonic- 8th week, placenta and umbilical cord develop
Fetal- 9th week, 28 weeks = age of viability
What does insufficient androgen activity represent?
females
Teratogens:
environmental agents that may cause abnormal fetal development
How can STI’s affect a fetus?
brain damage, blindness, deafness
FASD:
Fetal alcohol spectrum disorders
Involve a range of cognitive, behavioral, and physical deficits
Brain is underdeveloped
The Amazing Newborn (William James):
the newborns world is “buzzing, blooming confusion”
passive and disorganized
Preferential looking procedure:
Measure how long an infant looks at a stimulus
Newborns look longer at stimuli they find interesting
Vision at birth:
Limited acuity at birth
About 20/800
Prefer patterned stimuli
Prefer mother’s face
Green, yellow, red
Sound localization from birth:
U-shaped function, disappears at 4 months, reappears at 6 months
Phoneme discrimination in newborns:
exceeds that of an adult
Proximodistal principle:
Development is from innermost to outer
Arms before fingers
Cephalocaudal principle
Development is from head to foot
Head is large - growth proceeds towards lower body
Brain development:
At birth = 25% of adult weight
6 months = 50%
First areas= brainstem
Last areas: cortex
5 years = 90% of adult size
Describe Piaget’s stage model:
Brain builds schemas to achieve understanding
Schemas are modified to create equality between environment and undertsanding
Assimilation:
New experiences incorporated into existing schemas
Accommodation:
New experiences cause existing schemas to change
Sensorimotor Stage (Piaget)
Birth to 2 years
Understand the world through sensory experiences and physical interactions with objects
Object permanence:
Sensorimotor
Understanding that objects continue to exist even when they can no longer be seen
8 months
Preoperational Stage (Piaget)
2-7 years
World represented symbolically through words and mental images
Pretend play
Reflects egocentrism