Psychology Unit 1 Flashcards
Jacobs (1887)
Participants were given a string of unrelated letters and numbers that increases by one letter/digit each time.
Capacity (STM) - 7+/- 2
Peterson & Peterson (1959)
- Trigrams
- No rehearsal
- Stopped after 3, 6, 9, 12, 15, 18 seconds
Duration (STM) - 18 seconds
Conrad (1964)
Participants were given six consonants.
- 1st condition, similar sounding consonants
- 2nd condition, different sounding consonants
Encoding (STM) - Participants made more errors in similar sounding letters. Stored in acoustic codes
Bahrick et al (1975)
362 high school graduates were shown picture.
- Matched name to picture (recognition)
- Name the person (recall)
Duration (1975) - Participants performed better up to 34 years and then declined after 47 years. Recognition (60%) was more accurate than recall (20%)
Baddeley (1966)
Participants presented with four lists of words:
- Similar sounds
- Different sounds
- Same meanings
- Different meanings
Encoding (LTM) - More errors with similar sounding words. LTM codes semantically.
Loftus & Palmer (1974)
Misleading information on the accuracy of EWT
- 45 participants
- Two films of two cars colliding
- Hit/ Smashed/ Collided/ Bumped/ Contacted
- High speed, 41 mph (Smashed)
- Low speed, 32 mph (Contacted)
Christianson & Hubinette (1993)
Anxiety on the accuracy of EWT
- 110 people who witnessed bank robberies
- Participants that had greatest levels of anxiety were more detailed and accurate
Loftus (1979)
Anxiety on the accuracy of EWT
- Condition 1: Witnessed a friendly conversation, saw a man holding a pen
- Condition 2: Overheard angry conversation, saw a man holding a blood stained knife
They were asked to identify the man - Violent scene, more anxious, less accurate (33%) compared to low anxiety (49%)
Age and accuracy of EWT (Children)
Accurate -
Davies (1994): Children can resist misleading information if they are questioned sensitively
Not accurate -
Dent (1988): Children provided fewer details than adults
Warren et al (2005): Children are more likely to be influenced by leading questions than adults
Ceci & Bruck (1993): Children tended to change their answer when the question is repeated, assuming their answer is wrong
Age and accuracy of EWT (Elderly)
Accurate -
Yarmey (1993): No differences in older people and younger adults (More confident)
Not accurate -
Yarmey (1984): 80% of elderly participants failed to mention that attacker carried a weapon, compared to 20% young adults
Karpel et al (2001): 65-85 year olds were less accurate than 17 - 25 year olds in recall. They were also more vulnerable to leading questions.
Context Reinstatement
Witness is asked to mentally recreate an image of the situation, including details of the weather and emotional state.
Report Everything
Witness is asked to report everything even if it isn’t important
Changed Perspective
Witness asked to recall the event from different points of view
Recall in Reverse Order
Witness asked to recall details of the event in different orders, even in reverse
Method of Loci
Visual strategy useful for learning a list of a list of items. To do this, the person associates the items with landmarks in some familiar place, which helps them recall the items later.
Acronyms
Using the first letter of each item that you need to remember to create a new word, phrase or sentence.