I have found these websites to be so useful/important/crucial that they just had to be given a special place on the website! Now that many websites invariably resemble the outcome of over-zealous design students let loose with graphical software and an unlimited budget, it is refreshing to note that some sites still value sheer depth of content and knowledge above "glamour", adverts, and cookie-laden pages!

MDS-X v.5 (7th July, 2006)
OpenStat v.4
StatCalc v.1 and 2
Grant Devilly's Software
John Crawford's Neuropsychology software page (7th July, 2006)

  The NewMDSX software website. This is where the "Edinburgh"  MDS-X package now resides. Many of these fine programs came from the Borg-Lingoes series - incorporating some of Guttman's scalogram analyses along with PINDIS and INDSCSAL. The programs are now embedded in a fully functional Windows-hosted environment which is XP compatible; each program contains newly designed printable graphical output.  NewMDSX v.4.0 includes the excellent WOMBATS (Work Out Measures Before Attempting To Scale!) routine for producing a variety of dissimilarity and similarity indices. The main features of the program suite are listed at: http://www.newmdsx.com/features.htm.  Program Anaysis modules include:  CANDECOMP, HICLUS, INDSCAL-S, MDPREF,  MINIRSA, MINISSA-N, MRSCAL, PARAMAP, PINDIS, PREFMAP, PRINCOMP, PROFIT, TRISOSCAL, CONJOINT (formerly UNICON) and WOMBATS. I fell in love with this software back in the early 1990s. Great stuff and a great site to visit. The software is now a chargeable item - with several pricing categories, but a reduced-functionality free trial download is available from the website so that users can try before they buy. The original MSDOS programs may be downloaded entirely for free from http://www.newmdsx.com/programs.htm. 

A new improved version of NewMDSX was released on 1st June 2006. Version 5.0 replaces all previous versions of NewMDSX.

The MDS-X project team are:

   Bill Miller's Openstat Statistical software package. A free general purpose statistics program that Bill is writing in his "retirement time"! This is absolutely first rate analysis software that comes complete with a series of accompanying book chapters (pdf format) that really are "stats book" chapters in their own right. I recommend this software to students who cannot afford to purchase SPSS or STATISTICA for home use, but who nevertheless need to implement some statistical calculations. In fact, this package outstrips even these two in terms of some specialist functionality (such as data simulation and modelling). Bill maintains a newsletter for those who are interested - and is always available via email. Download today and be pleasantly surprised! For the programmers amongst us - Bill even provides the Borland C++ code for the routines. However, on top of OPENSTAT, there are a variety of other useful routines which can be downloaded for free - such as:

The MatMan package which provides tools for learning about vector and matrix algebra. The user can enter scalars, vectors and matrices and perform a variety of operations among and on them. Scripts of operations may be saved so that a series of operations can be performed repeatedly on different sets of values. Sample scripts are included for matrix operations such as a solution for multiple regression analysis.

The GradeBook package provides the teacher at nearly any level of teaching with a means of recording test scores, attendance, etc. for a class of students. The teacher can create specifications for multiple tests and how they are to be weighted in the total course grade. Grades can be automatically assigned by specification of "cut" scores for the letter grades to be assigned. Scores can be weighted and combined as raw scores, z-scores, t-scores, percent correct or percentile ranks. Reliability indexes can be estimated for the individual tests as well as the weighted combination of tests and other grading criteria.

The ItemBank package provides the means for entering and storing five types of test items: multiple choice, true or false, matching, sentence completion and essay. The user can create a coding structure with multiple levels for categorizing each item in the bank. Entered items are stored with the correct answer or preferred answer as well as both classical and item response theory parameter estimates. Specifications for a test can be constructed that reflect item classifications (content), as well as types of item to include. One can also randomly select items to provide a means of creating multiple tests over the same content areas and choose to print the test or administer it on the computer screen.

PicView is a small program for viewing pictures you have saved on your diskettes or hard drive. It will view .BMP and .JPG files in any sub-directory and let you print them on the printer.

CRISP and CRISPACT are two packages written for private practice personnel such as psychologists. CRISP is the Counselor Record Information System Package and CRISPACT is an accounting package for storing charges and receipts as well as producing billings and billing summaries for client accounts.

 Openstat is constantly being updated - so check for the latest version the website - and sign up to the user-group to keep informed about statistical and program issues.

  StatCalc. The StatCalc software (K. Krishnamoorthy Dept of Mathematics University of Louisiana at Lafayette http://www.ucs.louisiana.edu/~kxk4695/)  is like a PC calculator that computes table values and other relevant statistics for 25 probability distributions. These are the distributions for which probabilities, parameters and moments are computed: Beta, Bivariate Normal, Cauchy, Chi-square, Extreme Value Distribution, F-Distribution, Gamma, Inverse Gaussian, Laplace, Logistic, Lognormal, Noncentral Chi-square, Noncentral F, Noncentral t, Normal, Pareto, Rayleigh, Student’s t, Weibull, Binomial, Poisson, Hypergeometric, Logarithmic Series, Geometric and Negative Binomial. A help-file is provided for each distribution. It also includes some nonparametric table values, tolerance factors, and the bivariate normal distribution. Version 1.1. of the software is downloadable from the website - and is FREE! Version 2.0 of the software is now chargeable, and is available from the author (via email request). StatCalc 1.1 and 2.0 comes with a reference book (including help files, several illustrative examples, methods used for computing table values, algorithms for random number generations, and hundreds of formulas). However, The new version of this software is magnificent now - as is the new v.2.0 pdf manual of 311 pages - containing the formulae, derivations, and computational approximations used for each of the 34 distributions, as well as some really good "how to" examples. Note that each distribution function is linked via a document reference to the appropriate area of this manual -a very useful feature. Not only does the software permit the associated probabilities to be computed for each distribution, but it also contains implementations of some of the more popular statistical inference tests and associated confidence and power values for each. For those wanting a serious reference application and manual of statistical distributions and associated attributes - this is a goldmine of a resource! Version 1.1 is good - I can assure you that version 2.0 is a magnitude improvement and a "must have" for any researcher who is involved in work which requires key components of knowledge of certain statistical distributions. As an example of the kinds of routines and functions available for a distribution, look at the contents section for the Normal Distribution:

Normal Distribution
19. Computing Probabilities, Parameters and Moments
20. t-Test and CI for Mean
21. Sample Size for t-test
22. Sample Size for given Precision of CI
23. Test about Normal Variance
24. Confidence Interval for Normal Variance
25. Test and CI for µ1-µ2
26. Power Computation of Two-Sample t-test
27. Testing and CI for µ1-µ2 when Variances are Unknown and Arbitrary
28. Testing and Interval Estimation of the Ratio of Variances
29. Exact Tolerance Intervals for a Normal Population
30. Exact Factors for Equal-Tail Tolerance Intervals
31. Simultaneous Hypothesis Testing for Quantiles

Grant Devilly's Software. The Swinburne University (Australia) Centre For Neuropsychology site run by Prof. Grant Devilly and his students. Essentially a site devoted to Clinical & Forensic Psychology, Incident Recovery & Restorative Treatment. As well as much useful clinical information and associated links, the site contains a download area for some excellent specialist statistical software routines which clinicians and clinical researchers might find of great interest. Look under the "Resources for Psychologists" Header for the item "Free Software" ...

• Effect Size Generator
• Reliable Change Generator
• Random Number Generator
• Odds-Ratio Generator

There are free and professional versions of the main packages - and screen shots etc. are available on the site. The software is of a very high quality and very user-friendly. The programs have obviously been tested in the field!

  John Crawford's Software. This software page from Prof. John Crawford (his homepage)  .. From John's site ..." ontains a series of computer programs that implement a variety of psychometric and statistical methods for use in clinical research and practice in psychology; they are of particular relevance to clinical neuropsychologists. A subset (e.g. dissocs.exe, singslope.exe, iima.exe, singlims.exe, difflims.exe, clregbiv.exe, etc) are of particular relevance for single-case research in cognitive neuropsychology; for convenience these programs have been gathered together and placed on a separate web page - this latter page also contains versions of some programs (dissocs.exe and singlims.exe) translated into italian and spanish.

All programs are for PCs. Once downloaded, these programs can be run by any of the normal Windows procedures i.e. by clicking on file in File Manager, by using Windows 95 start menu, or by placing a shortcut on desktop etc.

When clicking to download the programs: most web browsers are configured to recognise that the files in questions are executables. If you have any problems (i.e. the browser treats them as text files), hold down the shift key when clicking.

As an illustration of these programs, you can view screen captures of the input form and results form; the example is singlims.exe a program for testing whether an individual's score is significantly lower (or higher) than a control sample (the program also provides a point estimate of the abnormality of the individual's score and 95% confidence limits on the abnormality)."

From John's siteThis is an excellent software and intellectual resource. As with Grant Devilly's software, it is clear that these programs have obviously been tested in the field!