Psychology CLoA Flashcards
Schema Theory- Bartlett
A cognitive structure that provides framework for organizing informations about the world, events, people and actions. Shortcuts that our brain uses to identify and refer to cultural events or happenings -Organize information in our brains -Activated to increase information-processing efficiency. -Enable the generation of expectations about objects, events and people. -Regulate Behaviour. -Relatively stable and usually very resistant to change; ensuring continuity so that we can process information and the ways we act. Schemas can also lead to distortions and mistakes when: -Settings are unfamiliar. -The wrong Schemas become activated
Schemas- Scripts
Provide information about the sequence of events that occur in a more-or-less un changing order in particular contexts. Ex- attending class or visiting the dentist
Schemas- Self Schemas
Organizing information we have about ourselves, information stored in our memory about our strengths and weaknesses and how we feel about them
Schemas- Social Schemas
(Stereotypes) represents information about groups of people. Ex-Women can’t drive or Asians can’t drive
Brewer and Treyins (1981) Office Study
The activation of a schema will influence the outcome of information processing An office setting with random objects that do not fit that setting- picnic basket, skull Conclusion: When recalling information they remembered the info that was consistent with the schema, they forget info that is not consistent with the schema (picnic basket)
The extent to which one cognitive process is reliable (Memory)** -To what extent is memory reliable?
Eye witness testimony (Loftus ___) “Memory is a reconstructive process” Bartlett (1932) War of Ghosts
Loftus and Palmer (1974) Accident Study
Participants saw a film of an accident The different words (crashed, bumped etc.) triggered different speed estimates and the severity of the accident -II PART- Questionnaire- had you seen broken glass, when actually there had been no broke glass, but schema to car crash related to seeing broken glass so we automatically can infer that there will be broken glass Conclusion: the wording of a question can immediately create a distortion. Different words lead to different reconstructions
Atkinson and Shiffrin (1968) Multi Store Model of Memory (!!!)
Memory consists of a number of separate stores and that memory processes are sequential 1. Info detected by sense organs and enters SENSORY MEMORY 2. If attended info enter SHORT TERM MEMORY 3. Info from STM is transferred to LONG TERM MEMORY (only if info is rehearsed) Sensory Memory -Duration: 0.25~0.5 seconds Short Term Memory -Duration: 0-18 sec -Capacity: 7 ±2 items -Mainly auditory Long Term Memory -Duration: unlimited -Capacity: unlimited -Encoding: mainly semantic -Model is supported by studies of amnesiacs (HM Case Study) -Oversimplified (not enough focus on interaction between stores STM and LTM) -Rehearsal is not enough to explain transferring of info- not explaining its efficiency
Grail and Lockhart (1971) Levels of Processing **
The more important/meaningful something is to a person, the more information shall be processed by your mind.
LeDoux’s theory of emotional brain (1999) Cognitive and Biological factors interact in emotion
Phelps (2004) emotional situations lead to the amygdala to modulate and encode storage to explicit memories. Short Route: the amygdala reacts immediately to sensory input and activates response system (fight or flight) -Emotional events receive priority Long Route: the sensory input goes via the sensory cortex to the hippocampus. Involved the evaluation of the stimulus- links to cognitive appraisal (Lazarus, 1975)
Corkin et al. (1997) HM MRI
MRI to study HM’s lesion in the first attempt to study his brain Results showed the relationship between damage to the medial temporal lobes (including hippocampus) and HM’s amnesia Use of MRI -Being able to see the synchronisation between various brain areas involved in cognitive processes. Mapping out active brain areas -Scanners studies map out the brain but do not indicate the cognitive processing functions of brain parts.
Bartlett (1932) War of Ghosts
Story telling -No standardized instructions -Performed in a laboratory (lack of ecological validity)
Evidence of Multi-Store Model of Memory
Murdock (1962) Primary and Recency effects Participant recall: words from the beginning and end of the list were the most recalled HM was unable to transfer new information from his STM to his LTM
Eye Witness Testimony
Loftus (2004)
HM Case Study (1953)
Epileptic seizures Removal of more of his brain than was intended (hippocampus too) HM’s inability to create long-term memories. Remember some of his childhood (retrograde amnesia: loss of memory before an event)