j & s study may actually test element of surprise rather than anxiety
p focus on weapon as they are surprised by what they see not always because are scared/anxious
pickel1998 conducted study where thief entered hairdressing salon carrying scissors,handgun,wallet,raw chicken as random items
found ewt was poor in highunusualness conditions
shows presence of unusual items are just as significant in influencing accuracy of ewt
meaning cannot be sure if its anxiety which makes us focus on weapon or if its just we are shocked to see it
X ethical issues?
ethical issues of protection from psychharm may be broken as research is creating anxiety in participants purely for purpose of research
p are experiencing moreharm than they would in reallife meaning it would be difficult to replicate these studies in future to check for reliability
may be more ethical ways to conduct research into this area
X influenced by individual differences?
in bothwell et al 1987 study p were assessed for neuroticisim - personality trait where individuals tend to become anxious quite quickly
p tested & labelled as neurotic/stable
stable p showed rising levels of accuracy as stress levels increased but opposite for neurotics - accuracy decreased as stressincreased
shows there are individualdifferences in way levels of arousal impact accuracy of ewt depending on our personality type
not a consistent explanation that can be applied to recall accurately in entire population
X yerkes-dodson law too simplistic?
anxiety is difficult to define & measureaccurately
has many elements - cognitive/behavioural/emotional/physical
inverted u explanation assumes only one of these is linked to poor performance - physicalarousal
suggests that only physicalarousal has an impact but anxiety has multiple components which have not been considered so may be other aspects to anxiety which increase/decreaseaccuracy of ewt
X evidence to show ewt influenced by dcs?
most lab studies showed p a filmed/staged crime
these p were aware they are watching a filmedcrime for a reason to do with study
chances are most will work out what questions are going to be asked about what they have seen meaning will guessaim of study & change behaviour accordingly
? ecological
rm involved are prone to dcs
behaviour is unlikely to be natural meaning its difficult to generalise findings to real life explanations of how anxiety influences ewt