---
aliases:
  - Operations Research Office
  - Research Analysis Corporation
  - ORO
  - RAC
category: "Private Organization"
tags:
  - Organization
  - ThinkTank
  - MilitaryPsychology
  - ColdWar
  - USArmy
  - KoreanWar
summary: "Successive Army-linked research organizations, the Operations Research Office at Johns Hopkins University and the Research Analysis Corporation in McLean, Virginia, which studied combat performance and guerrilla psychology from the Korean War onward."
location: McLean, Virginia
relations:
  - type: contractor_to
    with: "[[Johns Hopkins University]]"
    reverse: true
    start: 1948
    end: 1961
    role: "Operations Research Office, administered under Army contract"
    fn: 2
created: 2026-06-04
updated: 2026-10-14
---
The Operations Research Office (ORO) was an [[U.S. Army]]-linked behavioral science research unit established at [[Johns Hopkins University]] in [[Bethesda, Maryland]], that conducted some of the earliest systematic psychological studies of combat performance in the [[Korean War]]. The Army's senior analysis center was dissolved in June 1961 and replaced by a new organization, the Research Analysis Corporation (RAC), an independent nonprofit headquartered in [[McLean, Virginia]]. According to a 1995 history of federally funded research centers, the change was made so that the Army could remove ORO's director, [[Ellis A. Johnson]]. Johns Hopkins University, which administered ORO, was not willing to remove Johnson under Army pressure, and the two parties agreed to terminate the contract. A new contract between the Army and RAC took effect on September 1, 1961, and ORO's research program, personnel, physical assets and supply contracts were transferred to RAC.[^2]

### From ORO to RAC

ORO's early work centered on what made effective fighters and effective fighting units, drawing on Korean War data, including identification of the psychological and behavioral factors distinguishing effective combat units from less effective ones. [[Peter Watson]] wrote that the transformation into RAC followed the same institutional dynamic that affected other university-based military contractors, notably [[HumRRO]] at [[George Washington University]] and [[CRESS]] at [[American University]]: as the Vietnam War generated campus opposition, universities preferred to disentangle themselves from visibly military-sponsored social science.[^1]

RAC is often described in the military research community as being to the Army what [[Rand Corporation]] is to the Air Force: a generalist operational research organization that addresses all fields of operational inquiry, not just psychology. In the psychological sciences its interests have concentrated on motivating soldiers and guerrillas, pre-testing methods for psychological warfare and evaluating their effectiveness, and analyzing the uses and organization of Communist propaganda.[^1]

### Location and Institutional Environment

RAC's McLean, Virginia, headquarters placed it in a cluster of smaller military research organizations in the same area, including the Human Resources Research Inc., a smaller contractor working in related fields.[^1]

### Shared Work with HumRRO, CRESS, and Rand

ORO contributed psychological studies on defection and disaffection to the Korean War-era research record. These are cited alongside HumRRO studies in the same period, and CRESS (then [[SORO]]) drew on both bodies of work for its counterinsurgency research in the early 1960s. The [[ARPA]]-commissioned Rand Corporation Viet Cong motivation and morale study of the mid-1960s and RAC's own psywar evaluation work formed complementary parts of a larger institutional effort to apply behavioral science to [[Vietnam War]] counterinsurgency.[^1]

### Footnotes

[^1]: Peter Watson, *War on the Mind: The Military Uses and Abuses of Psychology*. Basic Books, 1978. pp. 462-468 (App. II).
[^2]: U.S. Congress, Office of Technology Assessment, "A History of the Department of Defense Federally Funded Research and Development Centers," OTA-BP-ISS-157, June 1995, p. 21. https://web.archive.org/web/2016id_/https://www.princeton.edu/~ota/disk1/1995/9501/950106.PDF