16 single subject n=1 Flashcards
can give evidence on general disease causes or treatment effectiveness
group comparisons
most often work with individual patients, causes of problems, effectiveness of treatment
health professionals
n=1 design similar to ____ design. Have control over _____
quasi-experimental; treatment and time of introduction
simplest form of n=1
AB
example of AB design?
patient has high temp, monitor temp regularly for 2 hours, give med, monitor temp
what is period A?
control (baseline) lvl of dependent variable
what is period B?
measurements after treatment
threats to AB validity?
maturation effect (patient temp already going down), instrumentation (not calibrate well, use diff one), history (other influences)
this design introduces reversal condition (re-introduce A conditions after withdraw treatment, then B again)
ABAB
when is ABAB not useful?
if variable irreversible, or unethical to withdraw treatment if produced desired effects
perks of ABAB?
stronger control for extraneous variables
concurrent observations to generate two + baselines
multiple baseline design
ex. of multiple baseline design?
brain damaged client with aggressive behaviours disrupting occupational and speech therapies–>introduce behavioural treatment strategy–>monitor frequency of outbursts in both sessions–>introduce treatment first in one session then later in other
perks of multiple baseline?
help control for extraneous factors that may influence dependent variable
can generate baselines for 2+ ___ or ____
individuals; outcomes
