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Software for the Analysis of Interaction Sequences

Program GSEQ

GSEQ (General Sequential Querier) is a program devised for sequential analysis. It reads compiled SDIS files and provides a variety of sequential statistics, including tables of lag frequencies, chi-squares, and adjusted residuals. Several kinds of data modifications are permitted, including recoding, lumping, chaining, time-windowing, and removing of behavioral codes. GSEQ can export results for further analyses using SPSS, BMDP, SAS, ILOG, etc. Users interact with GSEQ by a specific command language.

SDIS (Sequential Data Interchange Standard) is a language for describing sequential data as obtained thru direct observation of individuals, interacting dyads, or groups. Also, it is a program that parses, checks, and compiles ASCII files containing data written according to SDIS syntax. Data can be entered manually into SDIS files, or converted from other data formats such as those used in Mangold's Interact and Noldus' The Observer videoanalysis software using our standalone utilities ActSds, OdfSds, and OTS.

Initial versions of GSEQ were called SDIS-GSEQ, and ran in DOS. The current version is GSW (GSEQ for Windows) 4.2.0. New version GSW 5.0 is under construction, and will be probably available in spring 2009; a beta version of it (called GSW 4.5.0) is available for downloading. An old DOS version (SDIS-GSEQ 2.0) is still available, but it is no longer updated and supported. The Windows version includes many more features and functions than the original version, and has an HTML help system.

Version history:

  • 1995-1996: DOS versions 1.1 (English) and 1.2 (Spanish) were published.
  • 1996: DOS version 1.4 (bilingual English/Spanish). It included several enhancements and bug fixes.
  • 1997: DOS version 2.0 (bilingual English/Spanish). It included major changes such as a new data type in the SDIS language (multievent sequences), more features in the data language itself, a new and more efficient binary format for compiled files (MDS 2.0), full integration of program PLOT in the SDIS-GSEQ User Interface, enhanced exportation capabilities, and so on.
  • 1997-2000: Prototype GSW (GSEQ for Windows) versions 3.x. Multilingual (English/Spanish/Italian). It ran in Windows 95 or later. The user interface was, of course, completely new, and included a command composer, MDS file displayer and plotter, and tools for computing observer agreement indexes. SDIS specifications were enhanced.
  • 2001: GSW (GSEQ for Windows) version 4.0 is released. It includes several enhancements in analysis commands, and a new HTML help system.
  • 2002: GSW (GSEQ for Windows) version 4.1 is released. Memory size is increased (bigger lag tables can be requested, more codes can be specified in data modification commands, codes and labels can contain more characters, and so on), and the HTML help system is updated.
  • 2006: Protection is removed from GSW 4.1.2, so that the Windows version no longer needs a key file from the original DOS program.
  • 2007: New versions GSW 4.1.3, 4.1.4 and 4.2.0, with some bugs fixed.
  • 2008: New version GSW 4.2.0, for Windows Vista and older Windows versions.
  • 2008: Beta version of forthcoming GSW 5.0 (called GSW 4.5.0).