The Romance Between Extroversion And Physiological Options Psychology Essay

There has been a substantial research in to the romantic relationship between how extroverted a person is and their physiological actions (Eysenck, 1967, cited in Martin, Carlson, & Buskist, 2007). Many reports have been carried out around the world to research this relationship and exactly how environment and genetics can contribute to extroversion within individuals. Today's study viewed the partnership between extraversion and physiological measures in Mindset undergraduate students in the UK. No significant relationship was found between extroversion and heart rate or extroversion and galvanic epidermis response.

The romantic relationship between extroversion and physiological procedures in university or college students

There has been much research into the marriage between arousal in response to a variety of tasks in both introverts and extroverts. Eysenck (1967) (cited in Martin, Carlson, & Buskist, 2007) suggested extroversion is a representation of their state we do not show in your central stressed system (CNS). He explained that enjoyment and sociability were two of the main traits associated with extroversion. In a report investigating joy and extroversion in undergraduate students, it was found that the two were significantly correlated. These distinctions support the idea that introverts are different to extroverts in that extroverts look for more stimulating environments. The present analysis set out to check out further into this idea by looking at the partnership between extroversion and physiological measures in Psychology students at a college or university in the united kingdom.

Studies into the origins of extroversion within an specific have been greatly conducted to understand why a person may be so extroverted or introverted; heritability seems to play a big adding factor. In a study comparing monozygotic twins and dizygotic twins, monozygotic twins were proven to give the most alike results with 70% of the twins tested, being in the same way extrovert (Zuckerman, 1991, cited in Martin, Carlson, & Buskist, 2007). This analysis will not support the theory that extroverts are affected by their environment unlike most research into extroversion, it simply declares that genetics will be the cause.

Similar studies to the report have reinforced prior research like into whether biological factors differ within introverts and extroverts. A study into physiological options and extroversion was completed in Singapore where in fact the results exhibited lower extroversion scores were correlated with heightened cardiovascular reactivity while higher extroversion scores were correlated with lower cardiovascular reactivity. The study also found that higher extroversion was associated with lower cardiovascular reactivity during stress jobs and appeared to have an impact on how individuals communicate and manage anger (Jonassaint et al. , 2009). This study helps to support the idea that Eysenck suggested which says that introverts will feel unpleasant in a revitalizing situation, in cases like this cardiovascular activity, whereas extroverts will enjoy and seek out such environments. Heartrate and skin replies are also significantly associated with male students carrying out a aesthetic vigilance task who had been assessed on the Eysenck personality inventory as introverts (Gange, Geen, & Harkins, 1979).

Research has also found dissimilarities in the mind between extroverts and introverts. In a report looking at whether there's a relationship between extroversion and blood flow when smelling distressing and pleasurable odours, the area of the brain known as the amygdala in the temporal lobe, was highly correlated with cerebral blood circulation and higher extroversion ratings when subjected to the nice odour (Vaidya et al. , 2007). This piece of research supports the theory that extroverts are genetically dissimilar to introverts as they liked the knowledge of the pleasurable odour more than introverts does and their brain activation within the temporal lobe further backed this notion.

Other studies have further reinforced the way the environment, not genetics, may have an effect on both introverts and extroverts and how they react diversely. In a report investigating the result of vocals and noises on completing tasks in introverts and extroverts, it was found that introverts performed better overall on each activity except one, and introverts were more affected by the presence of each day music and noises than extroverts. (Cassidy & MacDonald, 2007). Introverts are also much more likely to respond more quickly to louder sound bursts than extroverts who have a tendency to respond equally quickly to varying noise intensities (Britt & Blumenthal, 1991). These studies facilitates Eysencks theory, which says that people whose brains are over-aroused, will find stimulating situations uncomfortable, and they'll look for quieter conditions.

Although this notion appears to be strongly supported, a study which investigated Eysenck's (1953) hypothesis of any marriage between extraversion and sympathetic stressed system activity used 42 undergraduate students and the outcome had not been quite the same. These students were exposed to dread arousing conditions and their heartrate and galvanic skin response (GVR) were measured during this time period (Small, 1976). Although you'll expect a marriage, no significant relationship was found. This little bit of research disconfirms Eysencks hypothesis and this may be credited to individual dissimilarities. In other words, maybe some extroverts aren't under aroused and are in reality over aroused, or maybe Eysencks personality questionnaire is not as appropriate in its benefits as we might think when calculating personality.

Although studies have been conducted in this field of research, the piece of research in this record was carried out to further provide support because of this area of review. The relationship between extraversion and physiological measures was examined on Mindset undergraduate students at a school in the united kingdom. It used a questionnaire designed to measure extroversion in a individual and a brief maths test which was provided to cause the individuals CNS to get into circumstances of high arousal. Predicated on previous conclusions, the hypotheses were that there will be a strong negative relationship between extroversion and heart rate and a strong negative correlation between extroversion and galvanic skin response.



Participants were 167 psychology students aged 18-65 studying at the University of Chester in Cheshire. The measures were taken from the sex percentage 1:4 males: females and the analysis used a stratified sampling method. Members were treated in accordance with BPS suggestions and educated consent was from each participant before taking part.

Materials and apparatus

The materials used included record bed sheets to write down the results for each participant, the maths task comprising of ten questions, increasing in difficulty, using +, -, x and / providers, the Biopac (Biopac MP30 device) with elecrodes (SS2L and SS3L causes measure heartrate and GSR), the EPQ comprising 23 questions which was filled out before the physiological measures were measured and a stopwatch to time each participant for 3 minutes completing the maths process.


After initially consenting to take part in the research, students were given a 23 item questionnaire to complete, designed to measure how extroverted they may be as people. Once completed, students were mounted on BIOPAC comprising electrodes being mounted on the wrist, hands and ankles which assessed galvanic skin response and heart rate and given a maths job to complete, designed to get harder as you advanced in a small laboratory room for three minutes. They were timed using a stopwatch by another participant who possessed already used part beyond the laboratory room. Once timed, results were taken from a ninety second period of the 3 minutes and the mean was computed using the BIOPAC software. The means were on paper, both for heartrate and GSR.

Design and analysis

This was a repeated methods study. Participants required part in both easy and trial. Heart rate and galvanic pores and skin response were assessed whilst the difficult task was being completed.


Average heart rate results from 137 members were correlated with their EPQ results using a Pearson correlation. This is conducted using SPSS v. 20. The scatterplot is shown in Physique 1 below:

The Pearson test demonstrated no relationship between average heartrate ratings and EPQ ratings and the result was found never to be statistically significant. (r(137)=-0. 049, p=0. 567).

Total EPQ scores from the 137 individuals were also correlated with average GSR scores by using a Pearson relationship. The scatterplot is shown in Figure 2 below:

The Pearson test showed no relationship between average GSR scores and EPQ scores and the result was found to not be statistically significant. (r(137)=0. 020, p=0. 820).


The results revealed no significant correlation between extroversion and heart rate and so the null hypothesis could not be declined. The correlation between extroversion and galvanic skin area response was also not significantly correlated and so the null hypothesis was accepted.

This study does not provide support to the results of prior studies in this area of research into extroversion and physiological actions. A report Singapore mentioned in the release of this survey discovered that extroverts were linked to lower cardiovascular reactivity during stress jobs and this seemed to affect how these specific individuals indicated and coped with anger (Jonassaint et al. , 2009). Contrasting even more with the results of this study, heart rate and skin replies are also firmly correlated with students accomplishing a visual endurance task who have been have scored on the EPI as introverts (Gange, Geen, & Harkins, 1979).

However some studies have also provided no support for the hypothesis of physiological actions being linked to extroversion. Small (1976), analyzed students exposed to dread arousing conditions whilst their heart rate and GVR was measured. He found no significant correlation, supporting the notion that extroversion does not correlate with physiological options within different individuals. In addition to natural factors not always differing between introverts and extroverts, the environment playing an important role has also been criticised. In a report investigating the result of familiar everyday or verbal noises on the cognitive performance of introverts and extraverts, no significant correlation was found (Avila, Furnham, & McClelland, 2012). This little bit of research provides proof there being no clear relationship between extroverts and introverts differing physiologically.

Although the results did not provide significant hypotheses to support the notion that extroversion and physiological procedures correlate, attention must be taken with research that does support this idea. The way of causality may be difficult to establish within this portion of research. Physiological measures may not be induced by extroversion but other primary factors. In a report by Cassidy & MacDonald, 2007, introverts appeared to be more afflicted by the existence of everyday music and noise when doing written duties than extroverts. However studies such as this cause issues as the results of results might not have been credited to extroversion, but other personality features of the participants. For example it may simply be that an individual may struggle to complete duties or write when there may be noise or music in the backdrop. In this analysis extroversion was assessed beforehand but there's a probability that the results they obtained may have been anticipated to demand characteristics whereby a participant may have wished to look more sociable than they are actually. This would make sure they are score highly by using an extroversion scale but in reality these are much quieter and so should have been have scored as an introvert. This would cause the little bit of research to shortage validity. In order to make this research more reliable, another analysis contained different members should be completed to ensure that similar results are obtained.

Although the present study in this article covered a good sample size and had individuals from different age ranges as its members, it did not provide enough information to support the theory that extroversion causes an individual to enjoy stimulating conditions, which in this case was the maths test. However, the studies in this statement do lend support to the idea that extroversion and physiological procedures are not highly linked to one another (e. g. by Small, 1976). Overall, studies in this area of research give support to the idea of encouraging children to become confident from a young age. For instance, a lot more extroverted one is, the more likely they are to be sociable and talk to others before employment interview and the greater desirable they seem to be to be during this interview (Caldwell & Burger, 1998).

In conclusion the present analysis found no significant correlation between extroversion and physiological options in college or university students aged 18-65 in the united kingdom therefore cannot support Eysencks theory of extroversion. Future research into physiological steps and personality traits could be carried out to help support Eysencks theory; research into personality types as well as extroversion and specific traits could help to see which personality types cause certain physiological procedures as well as particular attributes more specifically. This may enable us to understand what truly causes a person to be an extrovert or an introvert, if the answer lie in heritability and genetics, or the surroundings itself.

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