Final answer:
The results of the study by Howard & Jones in 2000 cannot be provided as the information given does not include details from that specific study.
Step-by-step explanation:
It appears that the results of the study conducted by Howard & Jones in 2000 are not provided in the information given. The references listed cover a range of topics and studies from different years and authors, but none match the study by Howard & Jones in 2000. This situation is often encountered in academic research where a specific study is mentioned in passing or as part of the literature review leading to the current research question. Without more detailed information or access to the 2000 study by Howard & Jones, it is not possible to provide accurate details about the results of their research.