The study is aimed at studying the effect of personal characteristics (extraversion) on the effectiveness of construction Project Managers with a view to determining whether personality has any effect on the Project Managers' performance. The study was carried out using two sets of questionnaires consisting of Eysenck Personality Questionnaire (EPQ) Adult Form and structured questionnaire to sample respondents' personality and measure their effectiveness respectively. The study revealed that personal characteristics is a feature of every construction project manage in the study. However, extraverted construction project managers constitute 64% of the respondents while introverted construction project managers constitute 36%. It was revealed that the three areas where the respondents are more effective in order of ranking are effectiveness of meeting clients' requirements in term of functionality of projects; effectiveness in terms of delivering the projects in terms of required quality standard; and effectiveness in terms of resolving conflict after occurrence before threatened project objectives which ranked first, second and third respectively. The study found out that there is a negative relationship between extraversion and effectiveness. The test of statistical significance using standard error and t-test showed no relationship between the variables. The t-value calculated (-0.297) is less than the t-tabulated (6.314) 10

Technology has in the recent years been vehicle for improving effectiveness and precision by different professions in an attempt to achieving the best practice by these professions. One of such technologies which can employ to aid Estate Surveying and Valuation practice is Geographical Information System (GIS). Valuation of properties including real estate and other assets have often been carried out through the application of manual methods which is often found to be cumbersome and sometimes not producing accurate and reliable results. It is in realization of the inherent deficiency entailed in the application of manual approach in carrying out valuation that this study seeks to investigate the application of Geographic Information System (GIS) to the art of valuation practice in Nigeria using Port Harcourt Metropolis of Rivers State as a case study with a view to ascertaining its inherent benefits to valuation practice. To achieve the aim of the study, questionnaires were administered to seventy-four (74) estate surveying and valuation firms randomly selected in the study area. Presentation and analysis of data was done using mean and relative important index. Finding from the study revealed that estate surveyors and valuer are quite aware of the inherent benefits of the geographical information system (GIS) to property valuation, but only very few of the Estate Surveying and Valuation firms make use of it in their valuation practice. The study further revealed that majority of the Estate Surveying and Valuation firms were willing to adopt its use if only they could gain better understanding of its application to valuation practice as its application is bound to having positive effect on the practice of Estate Surveying and Valuation profession. Based on the findings, the study recommends that training should be held to equip estate surveyors and valuers with the required skills for the application of geographical information system (GIS) since empirical research has shown that it has potential of enhancing valuation practices.   Received: 14 December 2021 / Accepted: 20 March 2022 / Published: 5 May 2022

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