This paper reports the development and initial evaluation of a version
of the Pavlovian Temperament Survey (PTS) based upon a translation of
the original German into American English idiom. A total of 452 subje
cts from student and community subsamples responded to the entire Amer
ican English PTS item pool. Using the protocol employed in the develop
ment of other language versions, 66 items were selected for the invent
ory. The resulting scales-Strength of Excitation (SE), Strength of Inh
ibition (SI), and Mobility of Nervous Processes (MO)-had acceptable ps
ychometric characteristics. Scale intercorrelations were similar to th
ose of other language version of the PTS, with the most salient featur
e being a relatively high SE-MO correlation. Item principal components
analyses indicated that each scale contained situation- and/or respon
se-specific factors. General factors were also present for SE and MO.
SE was higher for males than females, and SI increased with age. Inter
nal consistency and scale intercorrelations were similar for males and
females and for the community and student subsamples. The application
of Australian, Polish, and German scorekeys to the responses of the A
merican subjects resulted in the expected moderate correlations among
the four versions of the SE and SI scales, and unexpectedly high corre
lations among the MO scales. Overall, the findings suggest that the Am
erican English PTS will be useful in assessing the Pavlovian nervous s
ystem properties. Copyright (C) 1997 Elsevier Science Ltd.