definitions of abnormality - statistical infrequency Flashcards
(10 cards)
what is the first definition of abnormality?
statistical infrequency
- how often we come across a behaviour
how is statistical infrequency measured?
uses up to date statistics to determine if a behaviour or trait is common among the majority of individuals
normal distribution
how many of the population fall within the normal distribution for IQ?
68%
85 - 115 = normal IQ
what is the mean of IQ?
100
how many people scored below 70 on the IQ test?
2%
what IQ scores are considered as abnormal?
above 115
below 70
what does a low IQ link to?
Intellectual Disability Disorder
IDD
statistical infrequency
+P: real world application
can be used in diagnosis
IDD requires an IQ of below 70 and a score of over 30 on Becks depression inventory
useful
statistical infrequency
+P: it is objective
judges by an a score/number so is less likely to be impacted by bias
reliable
D: not all scores mean abnormal e.g. 130 isn’t abnormal, it’s just infrequent
-P: labelling abnormality can be negative
can lead to a SFP
more damaging than beneficial