To conclude, we can see that there have been many issues in past with ethics. However, due to these issues being addressed and solutions being created such as the ethical codes, research is now not allowed to be conducted if it breaks the guidelines that these codes set out. Deception, however, is still necessary in much research conducted by psychologists as it is the only way to reduce demand characteristics in certain circumstances, but it is only acceptable so long as participants are fully debriefed and consenting after data has been gathered.