biology

• Sperry: aim was to record the psychological effects with hemispheric deconnection in patients with severe epilepsy.
• Sperry: controlled observation of split brain patients to investigate behavioral symptoms resulting from hemisphere deconnection.
• Sperry: snapshot study.
• Sperry: quasi experiment, IV is presense or absence of split brain, DV is p’ performance of tasks
• Sperry: Opportunity sample of group of 11 split brain patients from LA.
• Sperry: type of data

  primary data and qualitative data e.g how a patient responded to a symbol displayed to RVF.
• Casey: aimed to see if the ability to delay or not was a consistent personality trait.

  and to see if the ability to delay gratification in childhood predicts impulse control later in life.
• Casey: longitudinal study conducted for abt 40 years.

  present part of study involved 2 quasi experiments.
• B+C: lab exp with independent measures design, as there were 2 groups of p’.
• B+C:

  IV: whether kittens early experience was of totally horizontal or totally vertical environment.

  DV: were the behavioral and neuphysiological effects observed after being reared in a visually restricted environment
• B+C: sample: 2 newborn kittens

  • 5 months old
  • unaffected by experience