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CPSC 873
John D. McGregorSession 14
People Issues
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Variation in developer performance
• H. Sackman, W.J. Erikson, and E.E. Grant found differences of more than 20 to 1 in the time required by different developers to debug the same problem (“Exploratory Experimental Studies Comparing Online and Offline Programming Performance,” Comm. ACM Jan. 1968)
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Warning signs
• They cover up their ignorance rather than trying to learn from their teammates.
• They are territorial.• They grumble about team decisions and
continue to revisit old discussions long after the team has moved on.
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Software engineer characteristics
• Growth-oriented• Introverted• Autonomous• Need for stability• Need to be sociable• Technically competent• Achievement oriented• Need for variety
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Software engineering characteristics
• Need for challenge• Need for competent supervisors• Need to make a contribution• Need for feedback• Marketable• Creative• Need for involvement in personal goal setting• Need for geographic stability
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1960s data from AT&T
New Code: 2%Modifying Existing Code: 20%Understanding Code: 78%
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Some newer numbers
• New Code: 2%• Modifying Existing Code: 20%• Understanding Code: 78%
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Maslov’s Hierarchy of Needs
• Physiological: air, food, water, sex, sleep, excretion, etc.
• Safety: health, personal well being, financial and employment stability, security against accidents, etc.
• Belonging: love, intimacy, friendship, family, social cohesion, etc.
• Esteem: self-esteem, confidence, achievement, respects, etc.
• Self actualization
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• http://www.ted.com/talks/tony_robbins_asks_why_we_do_what_we_do
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Flow
• Flow is an optimal state of intrinsic motivation, where people become totally immersed in what they are doing.
• People experiencing flow often forget about physical feelings, passage of time, and their ego fades away.
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Motivational Factors
F1- Use of competence in SEF2 - PowerF3 - Work/life balanceF4 - CareerF5 – Actualization
http://ac.els-cdn.com/S0950584908000827/1-s2.0-S0950584908000827-main.pdf?_tid=4fa03916-737a-11e5-a871-00000aab0f02&acdnat=1444940666_be803322838d94899de9172658a0a1e8
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Use of competence in SE
• Feedback• Participation in the entire life cycle of a project• Making good use of skills• Problem solving• Exercise creativity• Exercise SE development practices• Team working
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Power
• Participation in decision making• Autonomy• Empowerment• Making a contribution/task significance• Identification with task
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Work/life balance
• Working in successful company• Work/life balance
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Career
• Technical development• Career path• Rewards and financial incentives
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Actualization
• Experiment• Change• Challenging work
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Friction
• Friction is any element that slows down your progress
• Can come from different sources• Can operate on different time scales• Can be more than simple delays
• http://delivery.acm.org/10.1145/1000000/990695/p15-armour.pdf?ip=64.196.95.4&id=990695&acc=AUTHOR-IZED&key=4D4702B0C3E38B35.4D4702B0C3E38B35.4D4702B0C3E38B35.2F44EA6BA188AAC6&CFID=721842984&CFTOKEN=14090242&__acm__=1444942736_6b67defa3ef0baf0d2751cfda5695993
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Continuous integration as a mitigation for friction
• “I don’t know dude. It works on my machine!”
• Slingin’ Code Around– It just flat out takes too long to deploy new
versions of the code.– Someone made a mistake in the code
deployment to testing.– Are you sure you’ve got the right build?
• Continuous Integration Is an Attitude
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Here’s what you are going to do
• Design an Android version of your app. At least do a screen design.
• http://www.raywenderlich.com/78574/android-tutorial-for-beginners-part-1
• Screen shots by 11:59pm Oct 26th