Final answer:
Physiological and safety factors were important when stratifying the standardization sample for the WAIS-IV, while love and self-actualization were not relevant.
Step-by-step explanation:
When developing the WAIS-IV, factors related to the standardization sample of 2200 American individuals were important. These factors include physiological characteristics such as age, gender, and health conditions. In addition, safety measures were taken to ensure the well-being of the participants throughout the testing process. Love and self-actualization, on the other hand, are not directly relevant to the stratification of the standardization sample for the WAIS-IV.