Trading Against the Random Expiration of Private Information: A Natural Experiment

2019 ◽  
Vol 75 (1) ◽  
pp. 5-44 ◽  
Author(s):  
MOHAMMADREZA BOLANDNAZAR ◽  
ROBERT J. JACKSON ◽  
WEI JIANG ◽  
JOSHUA MITTS
Keyword(s):  
Private Information ◽  
Natural Experiment

Can Phishing Tank Survey Response Rates? Evidence from a Natural Experiment

Field Methods ◽  
2019 ◽  
Vol 31 (4) ◽  
pp. 295-308 ◽  
Author(s):  
Philip S. Brenner
Keyword(s):  
Information Technology ◽  
Private Information ◽  
Natural Experiment ◽  
Response Rates ◽  
Survey Response ◽  
Web Survey ◽  
It Services ◽  
It Department ◽  
University Department ◽  
Mailed Survey

In today’s survey climate, many individuals doubt the legitimacy of survey invitations. Phishing, an Internet-based fraud that tricks users into disclosing private information, has the potential to further erode the perceived legitimacy of e-mailed survey invitations and harm cooperation. However, no study has tested the effect of phishing on response rates. This article reports on a natural experiment examining phishing’s effect on survey response. University faculty and staff received an invitation to participate in an annual web survey on satisfaction with information technology (IT) services followed by a request to participate in a second “survey” ostensibly sent by another university department. However, the second survey invitation was a simulated phishing attack sent by the IT department. Analysis of response rates and the timing of responses from each of the last five years of the legitimate survey suggests that the phishing simulation dramatically reduced response compared to predictions based on previous years.

scholarly journals Price Revelation from Insider Trading: Evidence from Hacked Earnings News

2021 ◽  
Author(s):  
Pat Akey ◽  
Vincent Grégoire ◽  
Charles Martineau
Keyword(s):  
Machine Learning ◽  
Financial Markets ◽  
Insider Trading ◽  
Private Information ◽  
Natural Experiment ◽  
Qualitative Information ◽  
Qualitative And Quantitative ◽  
Earnings Information ◽  
Private Signals

From 2010 to 2015, a group of traders illegally accessed earnings information before their public release by hacking several newswire services. We use this scheme as a natural experiment to investigate how informed investors select among private signals and how efficiently financial markets incorporate private information contained in trades into prices. We construct a measure of qualitative information using machine learning and find that the hackers traded on both qualitative and quantitative signals. The hackers’ trading caused 15% more of the earnings news to be incorporated in prices before their public release. Liquidity providers responded to the hackers’ trades by widening spreads.

Getting the Measure of Twins

2018 ◽  
Author(s):  
William Viney
Keyword(s):  
Environmental Effects ◽  
Natural Experiment ◽  
Human Genetics ◽  
Scientific Research ◽  
Identical Twin ◽  
Social Scientists ◽  
Modern Biology ◽  
Stephen Jay Gould

Stephen Jay Gould, the biologist and author, once joked that were he an identical twin raised separately from his brother they could ‘hire ourselves out to a host of social scientists and practically name our fee’. In order to monetise Gould’s fantasy, one would want a form of twinship that could operate according to evidential, experimental, somatic and circumstantial ideals. And Gould admits that he and his brother would need to be viewed as ‘the only really adequate natural experiment for separating genetic from environmental effects in humans’. This chapter seeks to interrogate the evidential and experimental circumstances that may underpin the comic quips that guide modern biology. In human genetics, twins are used as experimental bodies that are made to matter in particular ways and for particular people; they become newly ‘animate’ for being enrolled into scientific research. Raised in cultures assumed to be alike or dissimilar, isolated by researchers for being valuable in the measured disentanglement of assembled molecular agents (which are sometimes distinguished from an assemblage referred to as an ‘environment’), twins achieve a status of experimental significance not just for what they do but also for what they are taken to be.

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