Recently, Mario's tantrums seem to last longer. Which data recording procedure might be the best one to use to determine this?

Using the duration recording procedure is the most effective method for determining whether Mario's tantrums are lasting longer. This approach involves measuring the total time that the behavior occurs within a specified observation period, which provides precise information about the length of each tantrum. By focusing specifically on duration, you can collect data that highlights any increases in the amount of time Mario spends engaged in tantrums.

In contrast, other recording methods, such as partial interval, whole interval, and time sampling, are less suited for this particular goal. Partial interval recording, for instance, only requires the observer to note if the behavior occurs at any point during the interval without giving a complete picture of how long the behavior lasts. Whole interval recording requires the observer to confirm that the behavior occurred for the entire interval, which might miss occurrences where tantrums are shorter than the interval. Time sampling may periodically check for the occurrence of the behavior, making it difficult to capture the full extent of the tantrum's duration. Thus, duration recording stands out as the most appropriate choice for accurately assessing changes in the time length of Mario's tantrums.