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					                            ectiv e of
            l Per        sp
B iolo gica
    gres  sion
Ag                             44
                             -4
             r   10, pp. 441
      Chapte
Biological Perspective
Are we all born with genes for aggression?
Are some individuals more aggressive than others
because their brain functions in a different way?
Is aggression the result of our biological make-up, such as
the presence of certain hormones?


Psychologists who study the relationship between the
body and behaviour have developed various biologically
based theories to explain aggression.
Biological Perspective
Biological theories suggest that there are some
important physiological factors that combine in various
ways to influence whether an aggressive response will
occur in a particular situation.
Biological influences on aggression can occur through
genetics ( inherited characteristics), through the brain
and nervous system and biochemically (as a result of
various chemical substances in the body).
Both naturally occurring chemicals, such as hormones
and chemicals which are ingested, such as alcohol and
drugs, can affect the parts of the brain that control
aggression.
Neuropsychology
             The study of the changes
             in our brain structures
             can affect aggressive
             behaviours.

             Therefore if we sustain
             damage to our brain, this
             can have a significant
             impact on our tendency
             towards aggressive
             behaviour.
Phineas Gage
               Phineas gage was a road
               worker in the mid 19th
               Century who was a road
               worker.

               Whilst at work, he was
               impaled by a steel rod
               which flew through the
               air and struck him in the
               head.
Phineas Gage
Surprisingly he survived!

However, Gage’s personality
type changed from passive, to
angry and abusive.

Psychologists identified the
increase in aggressive attitude
and behaviour to have
occurred as a result of the
steel rod damaging his frontal
lobe.
Phineas Gage
               This was a breakthrough
               in the investigation of
               aggression, there was
               now proof that changes
               in brain structure can
               affect aggressive
               behaviour.
Activity 1. Group Work
                Task                         Need to cover
Break into 3 groups.                     Explain your biological influence.

Each group will be given a different     Explain any underlying theories.
‘biological influence’ to investigate.
                                         What research methods are used?
Either: Genetic Influences, Neural
Influences or Biochemical influences.    Outline any major experiments or
                                         studies.
Your group needs to create a short
PowerPoint presentation on biological    Outline any criticisms.
influence.
                                         You must provide relevant pictures, it
You will then teach the class about      should be eye catching.
your different influences.
Homework
           You will need to
           complete Learning
           Activity 10.23 on page
           445 of the textbook for
           homework.

           This will ensure that you
           will cover all of the
           different biological
           influences on aggression.
                    ving  me
         ou fo r ha       s….
   ank y              eek
Th         las  t3w
 ove r the
                        
                            of it……
                   y minute
          ved ever
   I’ve lo

				
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posted:5/12/2014
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