101 research outputs found
Incentivizing High Quality Crowdwork
We study the causal effects of financial incentives on the quality of
crowdwork. We focus on performance-based payments (PBPs), bonus payments
awarded to workers for producing high quality work. We design and run
randomized behavioral experiments on the popular crowdsourcing platform Amazon
Mechanical Turk with the goal of understanding when, where, and why PBPs help,
identifying properties of the payment, payment structure, and the task itself
that make them most effective. We provide examples of tasks for which PBPs do
improve quality. For such tasks, the effectiveness of PBPs is not too sensitive
to the threshold for quality required to receive the bonus, while the magnitude
of the bonus must be large enough to make the reward salient. We also present
examples of tasks for which PBPs do not improve quality. Our results suggest
that for PBPs to improve quality, the task must be effort-responsive: the task
must allow workers to produce higher quality work by exerting more effort. We
also give a simple method to determine if a task is effort-responsive a priori.
Furthermore, our experiments suggest that all payments on Mechanical Turk are,
to some degree, implicitly performance-based in that workers believe their work
may be rejected if their performance is sufficiently poor. Finally, we propose
a new model of worker behavior that extends the standard principal-agent model
from economics to include a worker's subjective beliefs about his likelihood of
being paid, and show that the predictions of this model are in line with our
experimental findings. This model may be useful as a foundation for theoretical
studies of incentives in crowdsourcing markets.Comment: This is a preprint of an Article accepted for publication in WWW
\c{opyright} 2015 International World Wide Web Conference Committe
SMARTER CROWDWORK BY APPLYING SMART CONTRACTS?
Crowdworking is characterized by flexibly engaging a workforce that is recruited for only one task. After the task is completed, the crowdworker and the company do not collaborate anymore. To identify the best-suited crowdwoker for a certain task, crowd working platform providers offer different tools to match both parties. Matching a crowdworker with the required skills for a task is an important factor to complete a crowdworking campaign successfully. As of today, the principal agent theorem and high transaction costs decrease the effectiveness of such campaigns due to information asymmetries between crodworkers and crowdsourcers. Based on a qualitative approach, we structurally develop a currently existing crowdworking campaign process. We then theoretically analyze how smart contracts can support and simplify the identified process while reducing the challenges of transaction cost economics and the principal agent theorem
CROWDWORK PLATFORMS: JUXTAPOSING CENTRALIZED AND DECENTRALIZED GOVERNANCE
Crowdwork is a novel form of digitally mediated work arrangement that is managed and organized through online labor platforms. This paper focuses on the governance of platforms that facilitate creative work—that is, complex work tasks that require high-level skill and creative workers. Crowdwork platform governance faces numerous challenges as a result of technology mediation, scalable and distributed workers, and temporary work arrangements. Creative crowdwork platforms, such as Topcoder, typically require additional governance structures to manage complex tasks. However, we know relatively little about creative crowdwork platform governance, as most existing studies focus on routine work platforms, such as Amazon Mechanical Turk. Accordingly, this paper explores how incumbent and insurgent creative crowdwork platforms are governed under centralized and decentralized modes. We conducted a comparative case study based on the analysis of two different cases: Topcoder, a successful commercial platform with a largely centralized governance structure, and CanYa, an emerging innovative platform based on blockchain technology with more decentralized governance. We identified and classified different governance elements related to work control and work coordination. In addition, we explored the characteristics of creative crowdwork platform governance with different degrees of centralization. Keywords: Crowdwork Governance, Creative Crowdwork, Centralized Platforms, Decentralized Platforms, Blockchain, Tokenomics
Revolutionizing Crowdworking Campaigns: Conquering Adverse Selection and Moral Hazard with the Help of Smart Contracts
Crowdworking is increasingly being applied by companies to outsource tasks beyond their core competencies flexibly and cost-effectively to an unknown group. However, the anonymous and financially incentivized nature of crowdworkers creates information asymmetries and conflicts of interest, leading to inefficiencies and intensifying the principal-agent problem. Our paper offers a solution to the widespread problem of inefficient Crowdworking campaigns. We first derive the currently applied Crowdworking campaign process based on a qualitative study. Subsequently, we identify the broadest adverse selection and moral hazard problems in the process. We then analyze how the blockchain application of smart contracts can counteract those challenges and develop a process model that maps a Crowdworking campaign using smart contracts. We explain how our developed process significantly reduces adverse selection and moral hazard at each stage. Thus, our research provides approaches to make online labor more attractive and transparent for companies and online workers
Friendly Hackers to the Rescue: How Organizations Perceive Crowdsourced Vulnerability Discovery
Over the past years, crowdsourcing has increasingly been used for the discovery of vulnerabilities in software. While some organizations have extensively used crowdsourced vulnerability discovery, other organizations have been very hesitant in embracing this method. In this paper, we report the results of a qualitative study that reveals organizational concerns and fears in relation to crowdsourced vulnerability discovery. The study is based on 36 key informant interviews with various organizations. The study reveals a set of pre-adoption fears (i.e., lacking managerial expertise, low quality submissions, distrust in security professionals, cost escalation, lack of motivation of security professionals) as well as the post-adoption issues actually experienced. The study also identifies countermeasures that adopting organizations have used to mitigate fears and minimize issues. Implications for research and practice are discussed
A Glimpse Far into the Future: Understanding Long-term Crowd Worker Quality
Microtask crowdsourcing is increasingly critical to the creation of extremely
large datasets. As a result, crowd workers spend weeks or months repeating the
exact same tasks, making it necessary to understand their behavior over these
long periods of time. We utilize three large, longitudinal datasets of nine
million annotations collected from Amazon Mechanical Turk to examine claims
that workers fatigue or satisfice over these long periods, producing lower
quality work. We find that, contrary to these claims, workers are extremely
stable in their quality over the entire period. To understand whether workers
set their quality based on the task's requirements for acceptance, we then
perform an experiment where we vary the required quality for a large
crowdsourcing task. Workers did not adjust their quality based on the
acceptance threshold: workers who were above the threshold continued working at
their usual quality level, and workers below the threshold self-selected
themselves out of the task. Capitalizing on this consistency, we demonstrate
that it is possible to predict workers' long-term quality using just a glimpse
of their quality on the first five tasks.Comment: 10 pages, 11 figures, accepted CSCW 201
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Crowdwork platforms: juxtaposing centralized and decentralized governance
Crowdwork is a novel form of digitally mediated work arrangement that is managed and organized through online labor platforms. This paper focuses on the governance of platforms that facilitate creative work—that is, complex work tasks that require high-level skill and creative workers. Crowdwork platform governance faces numerous challenges as a result of technology mediation, scalable and distributed workers, and temporary work arrangements. Creative crowdwork platforms, such as Topcoder, typically require additional governance structures to manage complex tasks. However, we know relatively little about creative crowdwork platform governance, as most existing studies focus on routine work platforms, such as Amazon Mechanical Turk. Accordingly, this paper explores how incumbent and insurgent creative crowdwork platforms are governed under centralized and decentralized modes. We conducted a comparative case study based on the analysis of two different cases: Topcoder, a successful commercial platform with a largely centralized governance structure, and CanYa, an emerging innovative platform based on blockchain technology with more decentralized governance. We identified and classified different governance elements related to work control and work coordination. In addition, we explored the characteristics of creative crowdwork platform governance with different degrees of centralization.https://aisel.aisnet.org/ecis2019_rp/11
The Dark Side of Recruitment in Crowdsourcing: Ethics and Transparency in Micro-Task Marketplaces
Micro-task crowdsourcing marketplaces like Figure Eight (F8) connect a large pool of workers to employers through a single online platform, by aggregating multiple crowdsourcing platforms (channels) under a unique system. This paper investigates the F8 channels’ demographic distribution and reward schemes by analysing more than 53k crowdsourcing tasks over four years, collecting survey data and scraping marketplace metadata. We reveal an heterogeneous per-channel demographic distribution, and an opaque channel commission scheme, that varies over time and is not communicated to the employer when launching a task: workers often will receive a smaller payment than expected by the employer. In addition, the impact of channel commission schemes on the relationship between requesters and crowdworkers is explored. These observations uncover important issues on ethics, reliability and transparency of crowdsourced experiment when using this kind of marketplaces, especially for academic research
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