The name is absent

Research Category
and Study

Data Time &
Space
Aggregation

Data
Period

Major Relevant Findings, Conclusions

Schroeter and

Azzam 1990

Quarterly, U.S.

1976-86

Evidence of monopoïy, monopsony behavior
by packers in beef and pork

Schroeter and

Azzam 1991

.....weekiy;u;s;..............................

................1972-88.......

No significant oïigopoïy, oïigopsony price
distortions for pork

Brester and Musick

.....MOnthïyruTs?............................

................1980-92.......

Increased concentration associated with higher
farm-whoïesaïe, farm-retaiï marketing margins
for ïamb

Matthews, Jr. et al.

.....M0nthlyΓU7s?............................

................1979-96.......

No significant association between increased
packer concentration and marketing margins
for the entire period

Increased concentration associated with higher
fed cattïe prices and ïower farm-whoïesaïe
margins for the 1992-96 sub-period

Ward and Stevens

.....M0nthlyΓU7s?............................

................1974-94.......

Littïe aggregate effect on beef industry price
ïinkages from increased packer concentration