On the Personality Traits of StackOverflow Users

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Myles Simmons
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1 On the Personality Traits of StackOverflow Users Blerina Bazelli, Abram Hindle, Eleni Stroulia Department of Compu,ng Science University of Alberta, Canada

2 Mo,va,on So3ware is becoming increasingly social Developers interact through social networks of experts How do personality traits impact this interac,on? Also examined by Rigby et al. 2

3 Research Ques,ons RQ1: Do the top reputed authors personality types differ? RQ2: Do author personali,es vary by reputa1on? RQ3: Do authors of posts belonging to the same topics share similar personality types? RQ4: Do personality traits have an impact on the process of up- vo1ng/down- vo1ng posts? 3

RQ3: Do authors of posts belonging to the same topics share similar

4 The Data Set Aug Aug ~10 million StackOverflow posts 4

5 Big Five Personality Traits 5

6 Linguis,c Inquiry and Word Count (LIWC) Dic,onary of 2700 English words 70 Dis,nct Dimensions (e.g., posi,ve emo,ons) I tried to understand the u,lity of backbone.js from its site, but I s,ll couldn't figure out much. Can anybody help me by explaining how it works and how could it be helpful in wri,ng beker JavaScript? I, me, mine talk, together love, sweet hate, dislike think, believe, could LIWC Dimension Your Data Personal Texts Formal Texts Self- references Social words Posi,ve Emo,ons Nega,ve emo,ons Cogni,ve words Ar,cles Big words

I, me, mine talk, together love, sweet hate, dislike think, believe, could LIWC Dimension Your Data Personal Texts Formal Texts Self- references 7.50 11.4 4.

7 Compu,ng the Personality Traits Qs : I tried to understand the u,lity of backbone.js from its site, but I s,ll couldn't figure out much. Can anybody help me by explaining how it works and how could it be helpful in wri,ng beker JavaScript? Ans: Backbone.js is basically an uber- light framework that allows you to structure your Javascript code in an MVC (Model, View, Controller) fashion where Some pros that I discovered with Backbone: extremely useful underscore u,lity library, code is well documented and a great read There is also this wonderful Collec,on class that lets you deal with collec,ons of models Neuro1cism = First Person Singular Ar,cles Posi,ve Emo,ons + Nega,ve Emo,ons Agreeableness = First Person Singular Big Words + Posi,ve Emo,on Nega,ve Emo,ons Openness = Pennebaker et al. Neuro1cism Extroversion Openness Agreeableness Conscien1ousness Ques,on Answer

js is basically an uber- light framework that allows you to structure your Javascript code in an MVC (Model, View, Controller) fashion where Some pros that I discovered with Backbone: extremely

8 Methodology Stack Overflow Posts Preprocessing - Discard code snippets - Remove HTML tags LIWC Personality traits values The authors share similar personality traits H 0 ANOVA H 0 : The means are equal H 1 : The means are not equal Authors who share similar personality traits Tukey s HSD H 1 8

personality traits H 0 ANOVA H 0 : The means are equal H 1 : The means

9 RQ1: Do the top reputed authors personality types differ? 95% Confidence Intervals of difference of means 9

10 RQ2: Do author personali,es vary by reputa1on? Top vs. Medium Low Medium vs. Low 95% Confidence Intervals of difference of means 10

11 RQ2: Do author personali,es vary by reputa1on? Top vs. Medium

12 RQ2: Do author personali,es vary by reputa1on? Top vs. Medium Low Medium vs. Low 95% Confidence Intervals of difference of means 12

13 RQ3: Do authors of posts belonging to the same topics share similar personality types? Android C# vs. Java JavaScript PHP Android vs. Java JavaScript PHP Java vs. JavaScript vs. JavaScript PHP PHP 95% Confidence Intervals of difference of means 13

Java JavaScript PHP Android vs. Java JavaScript PHP Java vs.

14 RQ4: Do personality traits have an impact on the process of up- vo1ng/down- vo1ng posts? Down- voted vs. Up- voted ques1ons Down- voted vs. Up- voted answers 14

15 Conclusions We used LIWC to explore the personality traits of StackOverflow authors top reputed authors are less neuro,c, more extroverted and open authors of up- voted ques,ons are less neuro,c Maybe managers could use these insights to hire more effec,vely social programmers Thank you!

extroverted and open authors of up- voted ques,ons are less neuro,c

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