Spaces are limited for this in-person training workshop, so please download and complete the registration form here [PDF, 206 KB], then email it to  to register your interest before 2 October 2023 (1 form per participant).  This training is in the latest major version release of STRmix™, and is open for attendance by scientific experts that act for prosecution or defense legal teams. Attendance will be confirmed once minimum attendee numbers are met.

Please note: We will monitor ongoing effects of Coronavirus (COVID-19) and should travel restrictions occur, we retain the option of reconfiguring this STRmix™ full training workshop to be remotely delivered using the Zoom virtual meeting platform ( link)).

Workshop Information:

Date:              4-7 December 2023 (4 days)

Location:      Unified Metropolitan Forensic Crime Laboratory

                        8555 Double Helix Court

                        Englewood, Colorado 80112


Workshop price: $US 3,200 per participant

Overview:  This workshop will provide participants with extensive and full STRmix™ user training, covering likelihood ratios and sampling uncertainty, introduction to STRmix™, and a detailed description of the biological models and mathematics on which STRmix™ is based.  Also included are ample “hands on” sessions to allow participants to use and familiarise themselves with STRmix™ under the guidance of the instructors.

 Participants will also receive:

  • the STRmix™ User’s manual (electronic PDF)
  • the STRmix™ Operation Manual
  • the STRmix™ Implementation and Validation guide (electronic PDF)
  • a STRmix™ Training Manual (hard-copy reference of the workshop presentations)
  • a 2-month evaluation version of STRmix™
  • electronic copies of training materials (for download prior to the training)
  • a certificate of attendance (after completion).

Online training modules:  Prior to the training, participants will be provided with online access to introductory training modules via the Talent LMS e-learning platform ( link)).  For best results, these must be completed prior to the training:

Supplementary training modules covering additional material may also be provided for a limited period via the same platform.

STRmix™ Evaluation version installation: This will be a remote installation of STRmix™ shortly before the start of the workshop.  A laptop is required during the workshop and the specifications are as follows:


Minimum specifications

Recommended specifications

Intel core 2 (Quad core) processor or better

Intel core i5, i7 2.6 GHz or better



300MB free HDD space

300MB free HDD space

Minimum of 4 cores

Minimum of 4 cores

Windows 10 64-bit or above

Windows 10 Professional 64-bit or above

Software specifications:

  • Windows 10 64-bit
  • MS Excel
  • Adobe Acrobat Reader


Draft schedule (subject to minor changes): 



Day 1

Day 2

Day 3

Day 4

0900 - 0930


Day 1 review

Day 2 review

Day 3 review

2. Continuous models. Why move?

14. Variability in the LR: sampling error and the HPD


19b.EXERCISE Moot court

0930 - 1000

9. EXERCISE. The MCMC game

3. Introduction to LRs 

15. Relatives and unified LR 

1000 - 1030

20. Database search functionalities


1030 - 1100

4. Introduction to STRmix™

1100 - 1130

5. EXERCISE. Single source and mixture examples

10. Assigning the number of contributors

16. EXERCISE. NIST mix13 

21. EXERCISE. Casework examples

1130 - 1200

1200 - 1300





1300 - 1330

6. The biological model

11. EXERCISE. Number of contributors

17. EXERCISE. NIST mix13 continued

22. Workflows

1330 - 1400

12. Population Genetic Models

1400 - 1430

7. Verbalizing LRs and hypothesis setting and EXERCISE

 18. STRmix™ Developmental Validation

23. Implementation & Validation discussion

1430 - 1500

24. Wrap Up

1500 - 1530

 13. STRmix™ output and diagnostics



19a. EXERCISE Moot Court

1530 - 1600

8. STRmix™ profile building and locus weights


1600 - 1630









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