Speech Spectrum's Correlation with Speakers' Eysenck Personality Traits

The current study explored the correlation between speakers' Eysenck personality traits and speech spectrum parameters. Forty-six subjects completed the Eysenck Personality Questionnaire. They were instructed to verbally answer the questions shown on a computer screen and their responses were recorded by the computer. Spectrum parameters of /sh/ and /i/ were analyzed by Praat voice software. Formant frequencies of the consonant /sh/ in lying responses were significantly lower than that in truthful responses, whereas no difference existed on the vowel /i/ speech spectrum. The second formant bandwidth of the consonant /sh/ speech spectrum was significantly correlated with the personality traits of Psychoticism, Extraversion, and Neuroticism, and the correlation differed between truthful and lying responses, whereas the first formant frequency of the vowel /i/ speech spectrum was negatively correlated with Neuroticism in both response types. The results suggest that personality characteristics may be conveyed through the human voice, although the extent to which these effects are due to physiological differences in the organs associated with speech or to a general Pygmalion effect is yet unknown

The persuasion and security awareness experiment: reducing the success of social engineering attacks

Objectives:\ud The aim of the current study is to explore to what extent an intervention reduces the effects of social engineering (e.g. the obtaining of access by persuasion) in an office environment. In particular, we study the effect of authority during a `social engineering' attack.\ud \ud Methods:\ud 31 different `offenders' visited the offices of 118 employees and on the basis of a script, asked them to hand over their office keys. Authority, one of the six principles of persuasion, was used by half of the offenders to persuade a target to comply with his/her request. Prior to the visit, an intervention was randomly administered to half of the targets to increase their resilience against attempts by others to obtain their credentials.\ud \ud Results:\ud 37.0% of the employees who were exposed to the intervention surrendered their keys whilst 62.5% of those who were not exposed to it handed it over. The intervention has a significant effect on compliance but the same was not the case for authority.\ud \ud Conclusions:\ud Awareness-raising about the dangers, characteristics and countermeasures associated with social engineering proved to have a significant positive effect on neutralizing the attacker