Final answer:
Increasing the difficulty of a task once an individual shows improvement is true and supports continued progress toward the goal task. Adjustments may include increasing intensity, frequency, or altering the target. Other statements provided require context for evaluation.
Step-by-step explanation:
The statement 'Improvement in the task being trained indicates a need to increase difficulty until the patient can manage the goal task' is True. In the context of rehabilitation or exercise training, once an individual shows improvement in a particular task, increasing the difficulty can provide further challenge and lead to continued progress towards managing the goal task. This concept is about finding the right balance between the difficulty of a task and the individual's ability, ensuring the task is neither too easy nor impossibly hard. Adjustments can include increasing the intensity, increasing the frequency, or altering the target of the task.
As for the other statements, they require specific contexts to accurately assess their truthfulness. A positive correlation does not necessarily mean there are health benefits to the variable under investigation. The evaluation of individual performance is dependent on the given scenario. The behavior of kinetic and potential energy of a thrown rock is governed by the laws of physics. Lastly, the force required to push an object up a ramp does not solely depend on its weight and the dimensions of the ramp but also on the frictional forces and the angle of the ramp.
When dealing with tasks of varying difficulty, it is important to consider arousal levels as depicted in FIGURE 10.7. Difficult tasks are best performed under lower arousal levels, while easy tasks can be handled with higher arousal levels. This is essential for maintaining optimal performance and increasing self-efficacy and social motives.