The respected leadership inventory, now available for French speakers The LPI: Observer is the 30-item observer assessment associated with the Leadership Practices Inventory (LPI) product suite. This product is the French-language version of the LPI: Observer assessment instrument. The Leadership Practices Inventory is the best-selling and most trusted leadership tool of its generation. This celebrated instrument approaches leadership as a measurable, learnable, and teachable set of behaviors. The 360-degree tool helps individuals and organizations measure their leadership competencies, while guiding them through the process of applying Kouzes and Posner's acclaimed Five Practices of Exemplary Leadership model to real-life organizational challenges.