Final answer:
The precise findings of Mayer and Massa experiment 3 are not provided. General principles suggest that external stimuli such as rewards or light conditions significantly affect learning and biological processes, such as the behavior of rats in a learning experiment or the germination rates of seeds under different lighting conditions.
Step-by-step explanation:
The findings of Mayer and Massa experiment 3 are not explicitly detailed in the question. However, based on the context provided about different experimental setups involving reward timing for rats in a maze and germination of seeds under different light conditions, we can infer the general principle that rewards or stimuli have a significant impact on learning and biological processes. If the mentioned experiments are related to the findings of Mayer and Massa, the conclusion could be that the provision of rewards or environmental stimuli lead to a change in behavior or biological response.
For example, in an experiment where rats were conditioned with food rewards, those that were given food earlier (learned faster) and were able to catch up to the control group that always found food. This suggests that timing of rewards impacts the speed and efficiency of learning. In a germination experiment, seeds exposed to red light would likely have a different germination rate compared to seeds exposed to far-red light or no light at all, indicating that specific light wavelengths influence seed germination.
If Mayer and Massa experiment 3 relates to these contexts, their findings potentially showed the importance of external stimuli in learning and development in biological entities, be it in the cognitive domain as with the rats in a maze, or the physiological domain as with plant germination.