Research Methods Edexcel Psychology

All the research methods you need to know for Unit 4 Issues and Debates, edexcel Psychology A2. Includes studies and evaluation points. 

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  • Created on: 12-06-12 11:43
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Research Methods
Description Strengths Weaknesses Studies
Lab A
study in
an art
if
ici
al +Good
con t
rol
s of
ext
raneous v ar
iabl
es A r
ti
fi
cial
si
tuation may ma ke C raik
a nd Tu lvi
n g
envi
ronme nt
u si
ng car
efu l
+Casual
r
elati
onshi
ps can
be par
ti
cipan t
s beh avi
our Could
be
du e to
d ema nd
cont
rol
s det
ermi
n ed
(Cause and
eff
ec t
) unr
e pr
ese ntat
ive (not
c harac t
e r
ist
ic s
th a t t
h e y
The
e xperi
me nter
ma ni
pu l
ates +St
ri
ct
Procedures
all
ow t
h em t o
be general
isable)
r ememb ered wo r
d s
b e t
ter
t
he I
V
an d measu r
es DV r
epli
cat
ed to
improve
rel
iabi
li
ty Lack eco l
ogical
vali
dit
y L oft
us and Pa lme r
Part
ic
ipa nt
s are
all
ocated
to D eman d Char act
eri
sti
cs + Time
all
ow e d
f or l ea r nin g and
condi
ti
on s
b y
the
e xper
ime nt
er
Invest
iga t
or
ef f
ects
> bia s
r ecal
l could b e
c on tro l led.
O bj
ecti
vity Lacks
eco l
og ica l
v alid i
ty
operat
ionali
sation of
+ C asu al
r
e l
at i
on sh ips can b e
var
iabl
es ma de
Mi l
g r
a m
I
nves ti
ga t
or effe c t s
+ G ood cont
ro l
s
Field The r
esearche r
ma ni
pulat
e s
the +Normal
sett
ing b ehavi
our
is
l
ikel
y t
o C annot
co ntr ol
ex t
ernal G o dde n and B a dd e ly
I
C
and me asu r
es t
he DV
in
a be
repr
e sent
ati
ve var
iabl
e s
c ann o t
be
ce r t
a i
n Not
v ery well
c o n t rol le d
( h ad t
o
get
nat
ural
sett
ing .
Part
ici
pants
are +Less
l
ikel
y t
o
dis
p l
a y demand changes i
n t
h e
D V
w ere o f
in wa t
e r,
out of w a t er a l
l
w h i
lst
al
locat
ed t
o
co ndit
ions
by t
he char
acter
ist
icsu
s u al
ly
unaw ar
e t
hey t
he change s i n
IV r ememb eri
n g
w o rd s)
experi
me nt
er ar
e i
n experi
me nt
Fe wer
con tr
o l
s so
d i
f
ficu lt
to H ofl
ing et
al
.
+Contr
ol
of
IV ca s ual
r
elat
ionshi
ps r
epli
cate ­
les s r
el i
able
Et
h i
ca l
issue s
( de c e p ti
on )
can
be i
nvesti
gate d E t
hical
i
ss ue s
if
p ar
ti
cip a nt s
+Ecol
ogical
Vali
dity ar
en '
t
aw a r
e t hey are i
n a n
experi
me n t
(
D ece pti
on ,
consent
et c)
Natural An exper
ime nter
make s
use of
+Can b e
u se d
to
study r
e al
worl
d O nl
y poss i
ble wh en natu r
a l
ly Charl
ton et
al.
an
exist
ing change or
dif
fer
en ce i
ssues occur
ri
n g
d if
fe renc es ar
is e DV= l
e ve l
of
ag gressi
on sho wn
by
i
n si
tuat
ions t
o
provi
de l
evels
of +Part
ic i
pants
are i
n norma l
set
ti
ng C ont
rol
ov er ext
ra neous chi
ldr
en
an
IV (
nat ur
all
y occur
ri
n g)
and behavi
o ur i
s li
kely
to be
r epresentat
ive
var
iabl
e s
is mo re
d if
fi
cult I
V=
befor e
an d
aft
er t
he
intr odu ct
ion
t
hen me asures t
he DV i
n each Dema n d
cha racteri
sti
cs
a r
e l
ess C ant
esta bl
is h cau seef fec t
of
t
elevi
s ion
condi
ti
on pr
oblema t
ic
G eneral
ly
ca nnot be Int
roduc ti
on w as
over
5 yea rs
Part
ici
pan t
s cannot
be al
locat
e d +Enabl es
res earchers
to i
nvesti
gate r
epli
cated coul
d be ot
he r causes
t
o condi
ti
o ns so
it
i
s not
a
true var
iabl
e s t
ha t coul
d not
p r
acti
call
y
or N ot
r
e pl
i c
a ble on same
isl
a nd
et
hical
l y
be ma n i
pulat
ed +I
V
w as
n atu r
a l
ly
occur i
ng

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Observation S t
ruct u r
ed +Natu r
al
and
covert
=
b eha vi
our is
l
ikel
y P ar
ti
cipan ts obser
v e r
s might Charl
ton
Si
tuati
o n s th a t
ha ve bee n t
o be highl
y repr
e sentati
ve of
r
e al
l
if
e be
biased i
f t
hey bec ome +Natur
al setti
ng
­ nat
ural
ar
ti
fi
cia lly
ma de.…read more

Page 3

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Theoret
ical
p er
spe ct
ive
of t
he
in spect
or
ma y
cau s e
bias
t owards
their
fi
eld.…read more

Page 4

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Unst
ruct
u r
ed +Other
types
all
ow
resear
cher
to g ai
n because
e ach one i
s l
ikel
y to B row n
e t
al
.…read more

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