Final answer:
During the Study phase of the PDSA cycle, one looks for any negative effects because of the change.
Step-by-step explanation:
In the PDSA cycle, the point at which you would be looking for any negative effects because of the change is during the 'Study' phase. This is the third phase of the cycle, where the data collected during the 'Do' phase is analyzed to assess the impact of the change.
In this phase, you would carefully and consistently determine the signs of potential negative effects by examining the data, comparing it to the expected outcomes, and identifying any discrepancies or undesirable consequences.
By doing so, you can evaluate the success of the change and identify any adjustments or corrective measures that may be necessary before proceeding to the 'Act' phase.