Rep IV is a suite of tools supporting research into, and applications of, a range of conversational constructivist methodologies based on George Kelly's Personal Construct Psychology (PCP). In its various versions, it aims to provide personal, professional and research support for promoting understanding of individual and communal psychological and social processes.
Rep IV provides conversational tools for constructing and analyzing grids (RepGrid), and nets (RepNet). Grids are a generalization of Kelly's repertory grids for eliciting construct networks through examples of their application, and nets are a generalization of visual syntactic structures used for representing construct networks directly in visual languages. It supports the use of grid and net tools separately and in combination, including integration between those tools and other applications such as text editors.
The RepGrid tool is the most recent in a series of grid tools originating in 1975 on the PDP12 as part of Mildred Shaw's research on repertory grid elicitation and analysis through conversational interaction with personal computers. Previous versions of the software include PLANET, RepGrid 2, KSS0, NEXTRA and WebGrid.
The RepNet tool is the most recent in a series of programs for drawing the nodes and arcs of networks originating in 1965 on the PDP7 as part of Brian Gaines' research on interactive automata simulation and its application to modeling and emulating human skills. Previous versions of the software include the inductive modelers, MA CHERIE and ATOM, the semantic network systems, KMap and KNet, and various other visual language tools. These tools have been widely used in areas such as education, psychology, management studies, artificial intelligence, knowledge acquisition, market research and personnel assessment.
The current releases are shown below (Release Notes 1-Oct-2005).
| Details of the versions and a table comparing their features are available here | 
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| The manuals have detailed descriptions, including screen-dumps, for all the features, and may be freely downloaded through the links above. |
Canadian purchases are subject to 5% GST and may be made as CDN$735.00 including GST. A GST invoice will be supplied.
Payment may be made through a wire transfer of CDN$710. Request a pro forma invoice for a wire transfer to obtain details.
Payment may also be made from certain territories in the local currency through a check or draft drawn on a clearing bank: USA US$ 700.00; Europe Euros 500.00; UK £ 350.00.
A license key will be sent through email on receipt of a wire transfer or of a check or draft drawn on a clearing bank made payable to: Centre for Person-Computer Studies, and sent to Centre for Person Computer Studies, 3635 Ocean View Crescent, Cobble Hill, BC V0R 1L1, Canada.
If your organization needs a pro forma invoice in advance, request one from sales@repgrid.com, specifying the name and address of the organization, payment by cheque or wire transfer, and whether for Window XP or OS X.
Note that purchase orders and credit cards are not accepted.
CPCS, 1-Jan-08