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INTRODUCTION TO PSYCHOLOGY SIMPLIFIED NOTES

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Introduction to Psychology – Simplified Study Notes Master the fundamentals of psychology with these well-organized and easy-to-understand notes. This document covers key topics such as human behavior, mental processes, motivation, emotions, learning, and the biological basis of behavior. It also explains major branches and schools of psychology in a clear and concise way. Perfect for students, these notes are designed to help you revise faster, understand concepts easily, and perform better in exams. Whether you're preparing for tests or building a strong foundation in psychology, this material is your ultimate study companion.

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EPSC121:
INTRODUCTI
ONTOPYSCHOLOGY
Whatispsy chology?
Psychologyist hescient
ifi
cstudyofbehav i
orandment alprocesses.Mentalprocesses
i
ncludet houghts,f
eeli
ngs,per
cepti
ons,reasoni
ngprocesses,memor i
es,emotionsandso
on. Behav i
ourencompasses bot h covert(i
ndi
rectl
yobser vabl
e)and ov ert(di
rectl
y
observable)behavi
ours.

Psychol ogyasasci ence
As a sci ence,psy chologyi s empir
ical,thatis,itis based on experi
ment ati
on and
observ ati
onr atherthanonopi nion,
belieforintui
ti
on.Ascienceisabodyofsy stemati
zed
knowl edge t hat is gat hered by car ef
ull
y observi
ng and measur i
ng phenomena.
Psychol ogistscarryoutexper i
mentsandmakeobser vati
ons,whichotherscanr epeat
;and
theyobt ain data whi ch ot
hers can v eri
fy.Resear
ch in psy
chologyf oll
ows scienti
fi
c
procedur es whi ch involv
e;collect
ing,anal yzi
ng,and int
erpr
eting i
nformati
on ordat a
regardingt hebehav iourunderstudy.

Goal
sofPsy chol
ogy
1.Todescribebehavi
or-throughcaref
ulsci
enti
fi
cobservat
ionorexperi
mentat
ion
2.Toexplainbehavi
or-byconducti
ngexperimentst
odet er
minecausesofbehav i
or
3.Topredictfut
urebehaviorbytr
yingtofi
ndoutthefactor
srel
atedtoapart
icular
behavi
or
4.To change,cont r
olormodi fy behavi
or,especial
l
y maladapti
ve orinappropr
iat
e
behavi
or

Theoriginsofpsychologygrowthofpsy chol
ogy
Psychologyemer gedasaf ormalsci
enceslight
lyov eracenturyago.Pr
iortothetimeit
becameaf or
malscience;issuesrel
atedtopsychologywer estudi
edaspartofphi
l
osophy,
soci
ology ,and physiol
ogy.I nlate 1800s,scienti
fic methods wer
e used to answer
questi
onst hathad puzzled phil
osopher sand psychologybecameaf ormalscient
if
ic
di
scipl
ineseparatefrom phil
osophy.

Psychol ogystartedasaf ormaldi scipl
ineint hey ear1879whent hef i
rstpsychol
ogical
l
abor atory was est abli
shed at t he Uni v
ersit
y of Lei pzig by a Ger man
phi
losopher /psychol ogistnamel y,Wi l
helm Wundt .Ataboutt hesamet ime,anAmer i
can–
Will
iam Jamessetup hi sl aboratoryi n Cambr i
dge,Massachuset ts. Theset wo are
consider edtobet hef oundersofexper iment alpsychol
ogy . Throughal ltheseyears,
psychol ogyhasev olv edasat ruescience.
Thehi storyofpsy chol ogycanbedi videdintothreemai nstagesnamel y:
 Theemer genceoft hescienceoft hemi nd
 Thest udyofbehav ior
 Thecogni tivepsy chology

MAJORBRANCHESOFPSYCHOLOGY
A branchofpsy
chologyisanareaofspeci
ali
zati
oninpsychology
. Sincepsychol
ogy
becameaf or
malsci
enti
fi
cdi
sci
pli
nev
ari
ousbranchesofpsy
chologyhav
eev ol
ved.

1.Physiol
ogical
Psychology
Physi
ologi
calpsychol
ogyi salsoknownasbiopsychol
ogy.Itstudi
esther el
ati
onshi
p
bet
weent hebrai
nandt herestofthener
voussy
stem tobehav
iour
.Itisconcer
nedwi t
h

1

,thebodyasabi ologi
calandneurologi
calsyst
em. Phy si
ologi
calpsychol
ogist
sstudy
percepti
on,thought,lear
ning,per
sonali
tyand behavi
ourinr el
ati
on t
ot he underl
yi
ng
neurologi
cal
activi
ty–allofwhichareofi
nter
estt
ot hepsy
chologi
stsandprof
essional
s.

2.DevelopmentalPsychology
Devel
opmental psychology f ocuses on dev elopment f r
om conception to death.
Devel
opmentalpsy chologists st
udy growth and dev elopmentinv ari
ous st
ages of
dev
elopment(i.
e.,prenatal
,infancy,chil
dhood,adult
hood,andol dage).Issuesstudi
ed
i
ncl
ude, physi
cal, cogni t
ive, personal
it
y, moral,l anguage, emot
ional and social
dev
elopment.

3.SocialPsychology
Thisfi
eldofpsychologystudiesthebehav iourofpeopleingroupsituations.Itfocuseson
theint
eracti
onbetweenpeopl e,theirperceptionsofoneanot herandt heef f
ectofgroups
on the i
ndivi
dual
’s behaviour. Topi cs studied i
ncl
ude;soci alperception,i
mpr ession
for
mation,aggression and v i
olence,f ormat i
on and change ofat t
itudes,leadership,
confor
mi t
yandsoci al
inf
luence.

4.Per sonali
tyPsychol ogy
Personali
ty psychology i s concerned wit
ht he st
udy ofconsistency and change of
behaviourov erti
me.I tf ocusesoni ndi
vi
dualdif
ferencesthatarehow peopledi fferi
n
ter
msoft heircharacteristi
cssuchasanxi ety
,mot i
vati
on,aggr
essi
on,emot i
onalst abi
li
ty
and so on. I talso l ooks att he causes ofindivi
dualdif
fer
ences and per sonali
ty
character
ist
ics.

5.Cl i
nicalPsychology
Itisabr anchofpsy chol
ogyconcernedwi t
hhumanbehav i
ourandment aldi
sorder
s,what
causesabnor malbehav i
ourand itstreatment. Cl
i
nicalpsy chol
ogyi sappli
ed inthe
diagnosis and tr
eatmentofpsy chol
ogicaldisor
der
s. Clinicalpsychologi
sts workin
hospital
sandcl i
nics.Iti
sappl
icableinhandli
ngpeopl
eexperiencingtr
aumae. g.post-
war
trauma.

6.Counsel l
ingPsy chology
Counselli
ngpsy chologyissimilart
oclinicalpsychol
ogybuti sgener
allyconcer
nedwith
advisi
ngandhel pingpeoplesol vemil
deremot i
onalandpersonalpr
oblems.Counselli
ng
psychologi
sts assistpeopl e havi
ng problems wi t
h drug abuse,careerchoice and
development,familyli
vi
ng,studyhabi
ts,subjectchoi
ce,st
ressmanagementandsoon.

7.I ndustri
alPsychology
Thisi saf i
eldofspeci ali
zati
onconcer nedwitht hehumanf actorint heindustri
alor
technologicalsett
ings,t hatis,aboutj ob sati
sfacti
on,how t oi ncr
ease mor ale and
product i
vi
ty,how t oi mprove servi
ces,and how t o develop betterjob trai
ning and
placementpr ocedures.I ndustr
ialpsychol
ogyhascont ri
butedtot hehumanengi neeri
ng
discipl
ine ref
err
ed t o as ergonomi cs,which i
nvolves t
he design ofequi pmentand
machi nerythataremor eef fi
cientandeasiertousebecauset heyfitt heactualsize,
strengthandcapabilit
iesofhumanbei ngswhouset hem.

8.ConsumerPsychology
Thi
sisafiel
dofpsy chologythatst
udi
esbuyinghabit
sandt heeffect
sofadv
ertisi
ngon
buy
erbehaviour
. Ital so st
udiesmarket
ing st
rat
egies,deter
mineschar
acter
isti
csof
2

,consumer sandsoon.Forexampl e,inasal
eof f
erinasupermarketyouarepromi seda
fr
eegi ftforpurchaseswor t
hacer tai
namountofmoney ,orpr
icesofaf ew it
emsar e
drast
icall
yr educed whi l
et hose ofot her
s arei ncr
eased.Thisfiel
d explains why
manuf actur
ers and compani es spend mill
ions ofshil
li
ngs on adver
ti
sement s and
promot i
onsasar esultofwhi
cht heymakegoodpr ofi
ts.

9.Educat i
onal Psychology
Thisisanar eaofpsy chologyconcer nedwi t
happl i
cationofpsy chologi
calpr
inci
ples,
knowledge, concept s, and t echni
ques t o probl
ems i n educat i
on. Educat i
onal
psychologi
stshel pinanal y
zingeducat ionalneeds,developi
ngcurricul
um andteaching
materi
als,andev aluati
nginstruct
ionalpr ogr
ammes.I talsofocusesonhowpeopl el
earn
andwhi chteachingmet hodsar eeff
ecti
v e.

10.
Heal t
hPsy chology
Thi
si sanar eaofpsy chol
ogyt hatstudi
esther elati
onshipbetweenpsychol
ogicalfact
ors
andphysicalail
ment sanddiseases.Forexampl e,howst r
essaffect
sphysi
calhealth.I
tis
al
so concerned wi th ways ofpr omoting behav i
ourr el
ated t
o good heal
th( such as
i
ncreasedexercise)ordiscouragingunheal
thybehav iour(suchassmokinganddr i
nkingof
al
cohol).

11.Envi
ronmentalPsychology
Thi
si saf i
eldofpsychologythatisconcernedwithstudy
ingt herel
ati
onshipbet weena
per
son’sphy si
calenvir
onmentandhi s/herbehavi
our.Aper son’sphysicalenvi
ronment
canaffecthis/
herbehaviour.Forexample,ourrel
igi
ousbeli
efs,at
tit
udes,prej
udicesand
eat
inghabitscanbeat t
ri
butedtoourexperi
encesintheimmediateenvir
onment .

12.Mili
tar
yPsy chology
Thisisanar eaofpsy chol
ogyspeci ali
sesint heappl i
cati
onofpsy chologicalpri
nci
plesand
knowledgeint hemi l
i
tarypracti
ces.Itisdesignedt osol v
epr obl
emsr elat
ingtothemi l
it
ary.
Mili
tar
ypsy chologist
splayasi gnif
icantrolein:-Milit
arypsychologicalresearch,Scr
eening,
sel
ectingandpl acementofmi l
i
tarypersonnel ,
Mi li
tarytr
aini
ng,Desi gnanddev elopmentof
mili
tar
ymachi nerytoenhanceper f
ormance, Counsel li
ngandr ehabi l
i
tati
onofsol dier
s
aft
er war , Leader ship t rai
ning, Psy chomet rics; psychologists hav e dev el
oped
measur ementt ool
sthathav ebeenusef ultomi li
tarypersonnelandpr actices.

MAJORSCHOOLSOFPSYCHOLOGY
Dif
ferentappr oaches orconceptualmodel s hav e been used to study and explai
n
behav i
ourinpsychology.Eachoftheapproachespr ovidesadiff
erentperspecti
ve(wayof
explai
ningbehav i
our)emphasizi
ngdiff
erentfactors.Theseappr oaches,alsorefer
redto
as/perspecti
vesorschool sofpsychol
ogy,representav i
ew poi
ntsorappr oachestothe
explanati
onofbehav iourandwhatmethodsofst udyshouldbeused.

1.St r
uctural
ism
Str
ucturali
sm isoneoft heearli
estschoolsofpsy chol
ogyt hatwasf oundedbyWi l
hel
m
Wundti n1879.Wundtest abl
ishedt hefir
stpsychologicallabor
atoryinGermanatt he
Univ
ersityofLeipzigandhei sconsideredasthefounderofexper i
mentalpsychol
ogy.The
set
tingupoft hi
sl abor
atorymar kedthebreakofpsychologyfrom phil
osophytosci
ence.

Thegoalofst
ruct
ural
i
smswast
ofi
ndt
heuni
ts,orel
ement
s,whi
chmakeupt
hemi
nd.
3

, Thef i
rststepinthestudyofthemindwast odescri
bethebasi
corel
ementar
yunitsof
sensati
on,i mageand emotion whi
ch composeit.Theyweremainl
yconcerned wi
th
deter
mi ni
ngt hecomponent
sofconsci
ousthought
.

Wundtused a t echnique call
ed introspect
ion t
o study t he st
ructur
e ofbehav i
our.
Int
rospecti
onisamet hodi nwhichsubj ect
sareaskedt odescribeindetailt
heirthoughts
andf eel
ings. Theassumpt i
onwast hatonecanunder standthest r
uctureoft hemi nd
thr
ought heobjecti
ver eport
sandr eactionsofthesubject.Forexampl e,asubj ectmight
bepresentedwi t
hacol ouredli
ghtandaskedt odescri
bei tasminutelyaspossible.

Howev er,otherpsychol
ogistsfel
tthatstr
uctur
ali
sm wasli
mitedto onl
yoneareaof
behaviourandhadfewpr acti
cal
appli
cat
ionsandbegananewschool
ofpsychol
ogycal
l
ed
funct
ionali
sm.


2.Funct ionali
sm
Will
iam James was t he leading for ce int he funct i
onal
ism schoolofpsy chol ogy.
Funct i
onal i
stsf eltthatpsy chologyshoul dstudy“ whatt hemindandbehav i
ourdo” .They
tri
edt ost udyt hef unctionsofmi ndandbehav iour.Theywer especifi
call
yint
erestedi nthe
factt hatmi ndandbehav i
ourar eadapt iv
e– t heyenabl eani ndivi
dualtoadj ustt oa
changi ng env ironment . Psychologist sint hi
s schooloft houghtwer einfluenced by
Darwi n’st heoryoft hesur vi
valf ort hef i
ttest.I nst eadofl imit
ingt hemselvest ot he
descr i
ptionandanal ysisofthemi nd,theydi dexper iment sont heway sinwhichl earning,
memor y,pr oblem sol v i
ngandmot ivationhel phumanbei ngsandani malstoadaptt o
environment s.Funct i
onal i
stsiniti
atedt hepsy chologicaltesti
ngmov ement,changedt he
courseofmoder npsy chol
ogyandwer eresponsiblef orextendingpsy chol
ogy’sinfluence
ondi versear easi nindust r
y.

3.ThePsy choanalyticPerspect i
v e
Thisappr oachwasf oundedbySi gmundFr eud,anAust r
ianphy si
cianwhosear eaof
speci ali
zati
onwasneur ology( thest udyofdi sorder
soft hener v
esandbr ain).I nhi s
treatmentofneur ologi
calpat ient s,Freud noted thatsomeofhi spat ient
spr esent
ed
sy mpt omst hathadnophy si
calbasi slikebraindamage.Thesesy mpt omswer er ealfor
thepat i
entsasiftheyhadneur ologi calcauses.Freudsuspectedt
hatthesepr oblemswer e
psy chologicalinoriginandasar esultdev el
opedacompl exandsophi st
icat
edmodelof
humanbehav i
ourknownaspsy choanal y
tictheory. Fr
om thistheoryhedev elopedthe
treatmentknownaspsy choanalysis.

Freudbelievedthatbehaviourisbr oughtaboutbyi nnerunconsci
ousf or
ces,dri
vesor
i
mpul sesoverwhi chthepersonhasl it
tlecontr
olandar ehiddenfr
om theawarenessof
theindivi
dual.I tistheexpr essi
onoft heseunconsciousdr i
veswhichshowsupi n
behaviourandthought.Forexampl e,psychoanal
ystsbeli
evethatdr
eamsandsl i
psofthe
tonguear emanifestat
ionsofwhataper soni sfeel
ingwithinasubconsciouspsychi
c
acti
vit
y.

Freudal soemphasizedthei
mpor tanceofearl
ychi
ldhoodexper
iencesonlaterper
sonal
it
y
development.Hecoi nedthephrase,“thechi
l
di st
hefatheroft
heman” ,
toemphasi zehi
s
beli
eft hatourchi
ldhoodexperiencesar est
oredinourunconsciousstateofmi ndand
i
nfluenceourpersonali
tyandbehav i
ourwhenwear eadult
s.
4

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