Cognitive Area Flashcards
Moray- dichotic listening and shadowing
Playing different outputs to each ear
Repeating out loud what they could hear in one ear
S & C general aim
Wanted to confirm that inattentional blindness occurs in a realistic, complex situation (5 seconds not unnoticed)
S&C aims
Testing a number of variables
- would similarity of the unexpected event to the attended event have an effect on inattentional blindness?
- would a particularly unusual event be more likely to be detected?
- would giving participants a more difficult task to do increase the rate of inattentional blindness?
- would use of a more realistic video (opaque) give different findings from those obtained via Neisser’s transparent video?
S & C research methods
Lab experiment- 4IVs
Self report- P answered Qs
Independent measures
S & C sample
228 mainly undergraduate Harvard Uni
(Data had to be withdrawn from 36)
192 participants after
12 to each condition
S & C controls
- actors
- location
- 75 second video clip
- 2 teams of 3 players
- pass ball same order
- 44-48 seconds unexpected event started
- event lasted 5 seconds
S & C IVs
- p’s focus (white/black)
- difficulty of task (pass/type of pass)
- unexpected event (gorilla/umbrella woman)
- Realistic video (opaque/transparent)
S&C procedure
Participants tested individually
Told to count number of passes in clip
Couldn’t write down during cheek, had to count in head, then write on paper at the end
3 questions participants asked at the end
1. “While you were doing the counting, did you notice anything unusual in the video?”
2. “Did you notice anything other than the 6 players?”
3. “Did you see a gorilla/woman walking across the screen?”
If they answered yes to any, asked for more details and not asked later questions
Debrief and offered viewing of video after
Overall results S&C
46% inattentional blindness
54% did see unexpected event
S&C results
Noticed unexpected event Transparent 41.6% Opaque 66.5% White 8% Black 67% Easy task 63.5% Difficult task 44.6% Gorilla 42.6% Umbrella woman 65.5%
S&ax conclusion
Inattentional blindness occurs in dynamic events that are sustained
Also occurs in opaque condition
There did no conscious perception without attention
S&C reliability
Internal: Standardised
High- controlled lab environment
External: consistent effect
Low- 12 participants per condition
S&C validity
Internal: construct
High- independent measures means unlikely to find out aims, likely to be an accurate measure
External: population
Low- Harvard undergraduates not the average attention, youthful and smart
External: ecological
Low- counting passes on video not true to life
S&C links to debates
Individual- situational
Usefulness
Psy as a science
Grant aims
Outshining hypothesis: context dependent memory benefit recall not recognition- recognition cues will outshine environmental cues
Investigate context dependent memory effects on both recall and recognition for meaningful info (as opposed to a list)
Grant research methods
Lab
Independent measures
Grant sampling method
Opportunity
Grant sample
40 original participants- only 39 data used
Ages 17-56
17 females, 23 males
Grant test conditions
Silent- silent
Noisy- noisy
Noisy- silent
Silent- noisy
Grant recall part
10 short answer Qs
Grant recognition part
16 multiple choice questions
Grant procedure
Read 2 page academic article on psycho-immunity while wearing headphones with no output or background noise output
- 2 min break
Given the questions still hearing headphones
Grant controls
Headphones, 2 min break, Qs, article, background noise, volume
Grant Mean correct answers /10 recall task
Silent silent- 6.7
Silent noisy- 4.6
Noisy noisy- 6.2
Noisy silent- 5.4
Grant mean correct answers /16 recognition task
Silent silent- 14.3
Silent noisy- 12.7
Noisy noisy- 14.3
Noisy silent- 12.7