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CATEGORIES:Charlton College of Business
DESCRIPTION:The Department of Accounting & Finance announces the following 
 research seminar. Speaker: Dmitri Byzalov (Temple University) Title: Fixed
 -effect controls for slope-based constructs Date: Friday, October 30, 2026
  Time: 9:30 -10:45 AM Location: via Zoom Meeting Meeting ID: 438 755 1509 
 Abstract: Fixed-effects designs are pervasive in modern research. Research
 ers often apply them “as is” to slope-based accounting constructs (e.g
 ., earnings response coefficient, which is the slope of Y = abnormal retur
 ns with respect to X = earnings surprise, asymmetric timeliness, or cost e
 lasticity). However, fixed effects are insufficient in such settings becau
 se they capture variation in Y, not variation in the focal slope dY/dX. Se
 veral recent articles point this out and add group-level and time-specific
  slopes for the construct. However, subsequent research mostly ignores thi
 s solution. We explain how this neglect distorts inferences and undermines
  the logic of designs like difference-in-differences. We further show that
  simple solutions using aggregate state- or industry-level slopes are insu
 fficient. They can cause major biases even when the treatment affects all 
 firms equally in the focal states or industries. We examine alternative so
 lutions and their potential pitfalls. Our adjustments change published fin
 dings. For additional information, please contact Prof. Hongkang Xu at hxu
 5@umassd.edu.\nEvent page: https://www.umassd.edu/events/cms/10-30-26-acco
 unting-and-finance-department-research-seminar.php
X-ALT-DESC;FMTTYPE=text/html:<html><body><h2><span style="font-size: 12.0pt
 \; mso-fareast-font-family: DengXian\; mso-fareast-theme-font: minor-farea
 st\; color: black\; font-weight: normal\;">The Department of Accounting & 
 Finance announces the following research seminar.</span></h2>\n<p style="m
 so-layout-grid-align: none\; text-autospace: none\;"><span style="color: b
 lack\;">Speaker: Dmitri Byzalov (<em>Temple University</em>)</span></p>\n<
 p style="mso-layout-grid-align: none\; text-autospace: none\;"><span style
 ="color: black\;">Title: Fixed-effect controls for slope-based constructs<
 /span></p>\n<p>Date: Friday\, October 30\, 2026</p>\n<p style="mso-layout-
 grid-align: none\; text-autospace: none\;">Time: 9:30 -10:45 AM</p>\n<p st
 yle="mso-layout-grid-align: none\; text-autospace: none\;">Location: via Z
 oom Meeting</p>\n<p style="mso-layout-grid-align: none\; text-autospace: n
 one\;">Meeting ID: 438 755 1509</p>\n<p style="text-align: justify\; text-
 justify: inter-ideograph\; mso-layout-grid-align: none\; text-autospace: n
 one\;">Abstract: Fixed-effects designs are pervasive in modern research. R
 esearchers often apply them “as is” to slope-based accounting construc
 ts (e.g.\, earnings response coefficient\, which is the slope of <em>Y </e
 m>= <em>abnormal returns </em>with respect to <em>X </em>= <em>earnings su
 rprise</em>\, asymmetric timeliness\, or cost elasticity). However\, fixed
  effects are insufficient in such settings because they capture variation 
 in <em>Y</em>\, not variation in the focal slope <em>dY</em>/<em>dX</em>. 
 Several recent articles point this out and add group-level and time-specif
 ic slopes for the construct. However\, subsequent research mostly ignores 
 this solution. We explain how this neglect distorts inferences and undermi
 nes the logic of designs like difference-in-differences. We further show t
 hat simple solutions using aggregate state- or industry-level slopes are i
 nsufficient. They can cause major biases even when the treatment affects a
 ll firms equally in the focal states or industries. We examine alternative
  solutions and their potential pitfalls. Our adjustments change published 
 findings.</p>\n<p style="vertical-align: baseline\;">For additional inform
 ation\, please contact Prof. Hongkang Xu at <a href="http://mailto:hxu5@um
 assd.edu">hxu5@umassd.edu</a>.</p><p>Event page: <a href="https://www.umas
 sd.edu/events/cms/10-30-26-accounting-and-finance-department-research-semi
 nar.php">https://www.umassd.edu/events/cms/10-30-26-accounting-and-finance
 -department-research-seminar.php</a></a></p></body></html>
DTSTAMP:20261013T222305
DTSTART;TZID=America/New_York:20261030T093000
DTEND;TZID=America/New_York:20261030T104500
LOCATION:https://umassd.zoom.us/j/4387551509?pwd=bVB2QzdtRmFCdkk1WTVQSUxHMS
 9iQT09&amp;omn=92819407264
SUMMARY;LANGUAGE=en-us:Accounting and Finance Department Research Seminar
UID:4c43b7a687a344da245007fd140fc71c@www.umassd.edu
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