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Explanation of the role of the amygdala
Potential limitations of trait theory
The limitation of trait theory
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Biological Trait Theory has been found to have influences in neurophysiology, or the way the brain’s nervous system functions. When the part of the brain that controls fear, aggression, and social interactions, the amygdala, occurs in lower volumes, these traits will appear later in someone’s life. Other research cases have shown that psychopathic behaviors can occur when an individual’s amygdala functions at a lower efficiency or has certain deficits. One study, led by Yu Gao of the University of Pennsylvania, suggests that tendencies that may indict this event can occur before any crimes are committed. Another part of the brain, the anterior cingulate cortex, or the ACC, which plays an important role in controlling behavior and impulses,
Crime causation began to be a focus of study in the rapidly developing biological and behavioral sciences during the 19th century. Early biological theories proposed that criminal behavior is rooted in biology and based on inherited traits. Cesare Lombroso (1836-1909), an Italian army prison physician, coined the term “atavism” to describe “the nature of the criminal”...
Long standing arguments against the theory of natural selection stem from the occurrence of incipient structures and complex traits in organisms despite the seemingly stochastic nature of mutations. Many complex adaptations observed in nature today are thought to have arisen from less complex ones with simpler functions, therefore these characters are thought to have been “pre-adapted.” In order to go from a simple to a complex structures there must have been a transitional phase, where the two structures function simultaneously or where the new function is assumed without interfering with the old function. These structures are termed incipient or incomplete, and given what we know to be true of natural selection and the theory of evolution it becomes hard to reconcile the idea that natural selection continued to favor these structures despite the lack of selective value. Incipient structures are thought to be neither sufficiently large enough not elaborate enough to perform an adaptive function and thus it also becomes difficult to understand how larger complex characters arise. A discussion of morphological and developmental genetics explains that these structures have been performing useful functions since their simple origins, therefore being selectively favored while at the same time evolving to become large enough to accumulate new more complex functions. Modification of pre-existing genes and regulatory circuits in early development has been extensively studied in metazoans, Hox genes and the development of complex structures such as eyes, limbs and appendages. Phenotypic variation is therefore generated via the modification of existing genes, regulatory processes and developmental processes and this variation is acted o...
The trait approach is understanding the human personality that identifies and measures the degree to which certain personality traits. The trait theory tends to look at different traits and see whether you have the trait or how you fit into the five dimensions that is being measured. Whether you are more closed minded or open to new experiences it shows which one you are from the various questions you answered throughout the quiz.
Serial killers are defined to “be driven by instinct and desire to kill.” In a study done in 2000, Dr, Richard Davidson says, “people with a large amount of aggression – in particular people who have committed aggressive murders or have a social disorder – have almost no brain activity in the orbital frontal cortex or the anterior cingulated cortex while activity in the amyglade continued perfectly. The orbital frontal cortex and the anterior congulated cortex control emotional impulses while the amyglade controls reactions to fear.” Davidson concludes his research claiming that although environment can and will affect a serial killer’s thoughts, it is a killer’s genetic makeup that inevitably creates murderous thoughts.
Human behavior correlates to biology; the anatomy of the brain is directly responsible for emotions and cognitive responses. To prove the correlation between mind and action, there are many studies done to analyze the way the brain reacts under certain tests. One of which was Adrian Raine’s 1997 experiment to find physiological differences between murderers and non-murderers.
Surely there must be something wrong with someone who is extremely violent, or hurts individuals in ways our society will not allow. There are few things more repellent to 'human nature' and morality than the concept of a serial killer. What is different about the brains of these individuals whom our society finds unforgivable and unredeemable predators? Society might find a biological reason for such atrocities more comfortable than the prospects of 'good and evil' or a mistake. This paper will catalogue and attempt to organize the current biological differences between our minds and that of a serial killer.
Kiehl’s (2006) literature review continues with this idea of amygdala implication in psychopathic traits by saying that the amygdala, in particular o...
The purpose of this research report is to investigate the personality of Beyoncé Knowles in terms of humanistic and trait conceptions of personality.
The biological approach to psychology makes the assumption that all behaviours are associated with changes in the brain function and that psychopathology will be caused by a disorder within the brain, neuroanatomy. Many biological psychologists tend to assume that most behaviours, normal and disordered, involve an inherited component from the biological parents. In theory this suggests that all behaviours can be related to changes in brain activity.
Over the years, the theory has evolved into today’s foremost biological crime theory. The theory takes into account genetics and disorders that may be inherited. One example of a disorder that is genetic is antisocial personality disorder. This specific disorder is accompanied by a variety of side effects, some of which may result in psychopathic or sociopathic behavior. Psychopathic and sociopathic behavior specific to this example would be murder. Jeffrey Dahmer, for example, was an individual that participated in seventeen murders over a span of thirteen years. Although Dahmer was not able to plead insanity, he still had a severe mental disorder that may be partly to blame for some of his actions. Biological disorder is often difficult to back up due to the fact that many disorders are also based on nurturing
Scientists consider nature as a reason for psychopathy because of the way their brains are set up. One theory suggests that the one region located in the brain that is less active in psychopaths is the amygdala, which is normally linked with fear. In “The Wisdom of Psychopaths” Dutton explains that studies have been done and have proven that the brain has dysfunction. Dutton also explains a case study that he has done with the thought of killing one person over killing five. Psychopaths have no problem killing that one person.
The study of personality traits is beneficial in identifying the many variables that exist from human to human; the combinations of these variables provide us with a true level of individuality and uniqueness. In the field of psychology, trait theory is considered to be a key approach to the study of human personality (Crowne, 2007; Burton, Westen & Kowalski, 2009). This paper aims to identify a number of significant contributors who have played crucial roles in both the development and application of trait theory. This paper then moves focus to these theorists, outlining their theory and analysing both the strengths and weaknesses of those theories. An illustration of the methods used in trait measurement is given and includes the arguments both for and against such procedures. Lastly the findings of trait theory and its components described within the paper will be summarised.
Personality can be defined as an individual’s characteristic pattern of thinking, feeling and acting. Many personality theorists have put forward claims as to where personality is derived from and how it develops throughout an individual’s life. The two main personality theories this essay will be focusing on is the Social Cognitive Theory (SCT) (Bandura, 1986) and the Trait Theory – Five Factor Theory (FFT) (McCrae and Costa, 1995). The SCT allocates a central role to cognitive, observational learning and self-regulatory processes (Bandura, 1986). An individual’s personality develops through experiences with their sociocultural environment. Whereas the Trait Theory proposes that all individuals are predisposed with five traits (Extraversion, Openness, Conscientiousness, Agreeableness and Neuroticism) which determines our personality. This theory also puts forward that personality is stable and cannot change as it’s biologically determined.
Bronfenbrenner theorised that there are many different influences that affect a child’s development, forming 5 systems to categorise certain events, or environments into. This theory helps me to understand the theme of Nature Vs Nurture, as it gives some context as to what environments can affect a child's development. From this, we can work out solutions for each child's situation, to ensure that their development is still progressing.
There are various theories within the biological explanation as to why individuals commit criminal behaviour, these include: genetic theory, hereditary theory, psychosis and brain injury theory. In the next few paragraphs examples of each will be shown.