Paper 2 Flashcards
What are the Approaches in Psychology?
Learning approaches - social learning theory and behaviourism, humanistic, biological, cognitive, psychodynamic
What is the Behaviourist Approach?
Studies behaviour that can be observed and measured using lab experiments. Believes behaviour is gained from conditioning. Key psychologists: BF Skinner, Ivan Pavlov
What is Social Learning Theory?
Believes behaviour is gained from imitation of ‘role models’ which gain rewards from behaviour. Built on Bandura’s work, uses lab experiments.
What is the Cognitive Approach?
Studies inner mental processes using lab experiments to build theoretical and computer models
What are schema/schemata?
Packages of information/patterns of thought gained from past experiences
What is the Biological Approach?
Believes all of psychology is biological first. Studies genes, nervous system, neurochemistry. Mainly uses twins for research.
What is the Psychodynamic Approach?
Studies the unconscious mind which drives thoughts (e.g. desires, anxieties) and actions. Key figures:Freud and Jung.
What is the Humanistic Approach?
Believes humans are self determining and have free will as opposed to the behaviourism and psychodynamic approaches. Key psychologists: Maslow, Carl Rodgers
Name 3 key philosophers which contributed to the origins of psychology
Descartes, Lockes and Darwin
What did Descartes contribute as a philosopher and when did he live?
Early 17th century, discovered mind and body were independent (dualism).
What did Locke contribute as a philosopher and when did he live?
Late 17th century, believes that experiences can be ONLY obtained through senses (empiricism)
What did Darwin contribute as a philosopher and when did he live?
19th century, believes human behaviour has evolved and is inherited
What separates a hypothesis from being a prediction?
Hypotheses are clear, precise, testable and more detailed
Directional hypothesis
Has a predicted outcome based on previous scientific evidence. Specifies what difference is predicted. Also referred to as a one tailed hypothesis.
Non-directional hypothesis
Does not predict an outcome due to lack of previous scientific evidence. States unspecified difference. Also referred to as a two tailed hypothesis.
Extraneous variable
All variables which are not the independent variable which turns into a confounding variable when it hinders the results of the study
Internal reliability
The extent which a measurement is consistent
External reliability
The extent which a measurement is consistent over time
Classical conditioning
Learning through association between a neutral stimulus and reflex response. Studied by Pavlov
Pavlov’s dog
Before conditioning, dog salivates at food. During conditioning, a bell is repeatedly rang when dog is given food. After conditioning, dog salivates when bell is rang
What are the variables of the Pavlov’s dog experiment?
Unconditioned response (reflex), unconditioned stimulus (causes reflex), neutral stimulus (no response pre-conditioning), conditioned response, conditioned stimulus (what neutral stimulus becomes)
Null hypothesis
Theorising that the experiment will result in no change
Lab experiment
Changing independent variables under controlled environment. More vulnerable to demand characteristics. High internal validity, low external validity.
Field experiment
Changing independent variables in a natural environment. Hard to gain consent of participants. Low internal validity, high external validity. No risk of demand characteristics.
Quasi experiment
Documenting differences in pre-existing characteristics and uses a naturally occuring independent variable
Mundane realism
The extent that the experiment mirrors the real world so that results can be generalised
Aim
Statement about what you intend to find out
Operationalised
Defining variables in specific, measurable terms
Internal validity
The extent in which an experiment is controlled for researchers to identify the cause (IV) for the dependent variable
External validity
How far the study can be generalised across contexts e.g place, time, people
Ecological validity
Can it be generalised to other settings, places or environments?
Population validity
Can it be generalised to people different from the sample?
Historical/Temporal validity
Can it be generalised to people from different time periods?
Pilot study
Small scale version of study to identify flaws before investing money and time into a full scale study
Confederate
Individual who is not a real participant and instructed how to behave. Participants believe they are also a participant
Experimental design
Procedures used to organise groups of participants
Order effect
Where in repeated measures design, participants may change results between the time between 2 tests e.g become tired or have more practice from the first test
Counterbalancing
ABBA design - half of the participants given 1 test first and the another test later and the opposite for the other half. Used to solve order effect.
Repeated measures design
All participants take part in all tests and conditions. Cheaper and reduces effect from participant variables but vulnerable to order effect
Independent groups/measures design
Participants are assigned to different groups under different independent variables. Stops order effect but vulnerable to extraneous variables from participant characteristics
Matched pairs design
Pairs of participants are matched by key variables. The two experience tests under different conditions. Rarely used due to time consumption but can be reduced by focusing on key variables.
Random allocation
Assigning participants to groups using random techniques which have equal chance. Used to reduce participant variables.
Little Albert Experiment
Watson and Rayner investigated classical conditioning in humans. Loud noise produced whenever Albert reached for rat, Albert cries. After repetition, Albert cries at rat and other furry animals without noise.
Operant Conditioning
Learning through association with consequences. Studied by BF Skinner.
Positive reinforcement
Encouraging desired behaviour by giving reward when subject shows behaviour
Negative reinforcement
Subject avoids undesired behaviour due to punishment received when behaviour is displayed
Punishment
Unpleasant consequence in response to undesired behaviour
Experimental condition
Conditions which are changed, opposite of control condition
Control condition
Conditions which are the same as what would be experienced outside the experiment
Demand characteristics
Participants perform what they believe is the directional hypothesis of the experiment
Environmental determinism
All behaviour determined by past experiences which have been conditioned
Systematic desensitation
Therapy based on classical conditioning to treat phobia. Replaces CR of anxiety for another CR
Albert Bandura
Learning theorist who rejected behaviourism and experimented with humans. Opposed to Skinner, he believed that people could choose to perform desired behaviour. Developed Social Learning Theory.
Modelling
Observing a model perform a behaviour and imitating actions
Mediational processes
Observer stores mental representations of model’s behaviour and its consequences. Brain makes choice whether to imitate behaviour.
Vicarious reinforcement
Observers more likely to imitate behaviour if the consequence was gaining a reward
Bandura’s Bobo Doll Experiment
1961 Children 3-5 observe an adult’s behaviour towards the Bobo doll for 10 mins in person and on tv; calm and aggressive. Children copied the behaviour of the adults.
What are the steps in mediational processes?
Attention, retention (memory), motor reproduction (being able to imitate), motivation (will to imitate)
Natural experiment
IV is pre-determined by event and DV is gathered after event. IV cannot be changed due to ethicality or impracticality. E.g. IV may be children with divorced or undivorced parents
What are the strengths and limitations of natural and quasi experiments?
They allow research where IVs can’t be manipulated but cause and effect is not certain and participants cannot be randomly allocated therefore bias may occur
Example of SLT: Andsager at al
Similarity to a model on an advertisement related to the message’s effectiveness
Example of SLT: Fox and Bailenson
Similar and dissimilar virtual models to the participants either exercise or loiter. Participants more likely to copy similar models.
Define an experiment
A research method where conclusions can be drawn from observing a manipulated variable and the effect it causes
Example of a natural experiment: Charlton et al
Research introduced TV programmes to an island which had no TVs before. Found little difference in behaviour.
Investigator effects
When investigator’s behaviour/presence/appearance affects data e.g. researchers in suits more respected than casual clothing
Experimental realism
Participant pays attention to task instead of researcher if task is sufficiently engaging. Solves investigator effect.
Situational variables
Features of a research’s situation that affects participants behaviour e.g. order effect
Opportunity/convenient sample
Participants selected by people who are most easily available at the time of the study. Quick but biased due to self-selection and participant/ecological variables
Random sample
Everyone of the target population has an equal chance of being selected to be a participant. Provides more accurate generalisation but biased if individuals refuse participation.
Stratified sample
Set amount of people in an identified subgroup are selected to be participants according to their frequency in the population. All groups represented fairly but limited by what subgroups researchers identify.
Systematic sample
Every nth participant is selected. Less biased than opportunity but can become biased if individuals refuse participation.
Volunteer/self-selecting sample
Participants made up of solely volunteers. Quick and easy but biased due to characteristics of volunteers e.g. people who volunteer may be more social and outgoing
Computer analogy
Comparing the human brain to a computer
Cognitive Approach: Theoretical and computer models
Simplified, usually pictoral, representation of mental processes e.g. input-process-output
Why is the Cognitive Approach more credible than Behaviourism or SLT?
Considers inner mental processes (as opposed to Behaviourism) and has more research backing
Practical application of the Cognitive Approach
AI, robotics, treatment for mental health issues e.g. OCD, gambling addiction (Cognitive Behavioural Therapy = CBT)
BPS
British Psychological Society requires all registered psychologists to follow a code of ethics and conduct in research
Informed consent
Participants must be given a basic description of the study to decide whether to participate
Deception
When information given to participants is incorrect or withheld during the study. Can be compensated for by debriefing
Protection from harm
Participants should not experience negative effects after study e.g. embarrassment, pain, trauma. If unintended negative effects occur during the study, the study must be stopped
Confidentiality and anonimity
Data Protection Act protects participants personal information. Researchers must ensure participants identity is protected at all times.
Right to withdraw
Participants must be made aware of their rights and receive no negative effects for withdrawing
Cost-benefit analysis
Judging whether the study’s benefits outweigh the costs (negatives)
Ethics committees
Approves studies before they start, carrying out cost-benefit analysis. Includes both psychologists and non-psychologists however their opinions are subjective.
Monoxygotic Twins
Shares 100% of DNA - identical twins
Dizygotic Twins
Shares 50% of DNA (same as siblings) - non-identical twins
Concordance rate
Probability that two people with shared genes will develop the same characteristics. Diseases are more often specifically investigated for concordance rates.
Genotype
Individual’s genetic makeup
Phenotype
The way genes are expressed as a product of the genotype’s interaction with environment
Wilhelm Wundt
Established first psych lab 1875, used introspection and tried to be more objective in psychology. Believed in reductionism
Introspection
Examining inner thoughts (feelings, emotions, sensations) in a controlled setting.
Covert observations
Observing people without their knowledge as being overt will likely change data. May need debrief for ethicality but provides natural behaviour.
Inter-observer reliability
The extent to which other observers agree with an observation (approval of peers), improving reliability.
Non-participant observation
Observer is separate from the people being observed and do not interact with participants. May have observer bias but likely to be objective as they are detached from participants. Doesn’t have as much depth as participant observation.
Observer bias
Observer’s expectations affect how they perceive behaviour. Reduces validity.
Overt observation
Participants are aware they are being observed. Overcomes ethical issues but validity of data is at risk.
Participant observation
Observations made by a participant in the behaviour. Objectivity affected and investigator effect may occur but provides data with more depth.
Behavioural categories
Dividing a target behaviour (e.g. aggression, stress) into subsets of behaviours
Event sampling
Counting the amount of times a behaviour occurs during observation.
Structured observation
When researchers use systems to organise observations e.g. behavioural categories, sampling procedures. Important parts may be missed depending on variables decided but more objective.