â¢ Unmatched versatility ChromaSilk's low-ammonia formula allows users to mix the color with PRAVANA Zero Lift Creme Developer to create a demi-permanent, no-lift hair color from any of the 80 ChromaSilk Permanent Creme hair colors.
The Training Associates. Founded in 1994, The Training Associates is the largest, most recognized provider of on-demand learning and development talent and solutions. TTA's talent offerings feature over 25,000 L&D resources specializing in adult learning for all technologies and business/soft skills.
Evaluating Training Programs: Kirkpatrick's 4 Levels. The most widely used and popular model for the evaluation of training programs is known as The Four Levels of Learning Evaluation.. The model was defined in 1959 by Donald L. Kirkpatrick in a series of articles that appeared in the US Training and Development Journal.