The document discusses productivity, including definitions and measures. Productivity is a ratio of outputs to inputs. There are partial measures that look at single inputs and outputs, as well as multifactor measures. Productivity growth can be calculated as the change in current period productivity over previous period productivity. Examples are also provided of productivity measures for different factors like energy, capital, labor and machines. Factors that affect productivity include capital, quality, technology and management. Bottlenecks in production processes can also impact overall productivity.