I will suggest you include it because it is standard demographic data such as age, location, race. Like every survey asking standard demographic questions, like respondents gender may enable you to provide targeted intervention particularly if you eventually found out that gender may contribute to the study outcome.

I would like clarification on what you mean by gender. Many confuse sex and gender and use them interchangeably. Are you referring to the binary male/ female sex which only gives you part of the picture, or do you actually mean the range of gender? But asking the gender of the participants is often a question that is included.

Kola A Oyediran I tried placing its relevance within my research, however, it doesn't truly contribute to my study outcomes. Since I am conducting an experimental study, I am more interested in numerical data in terms of means and difference between my control and experimental group after the treatment.

Juanita Spears, Well in this case I targeting : Sex (Female/ Male).

Amel, are you planning to have descriptive information about the study group or target population? As mentioned in earlier answer, sex (female/male) is just one of the standard demographic data usually collected.

Kola A Oyediran I'm planning to have descriptive data about the study group. in my study, I used a mixed method quasi-experimental research. for the tools I used a scale and a questionnaire. in this regard, I will be extracting descriptive analysis out of the questionnaire and numerical analysis of out the scale. I understand that the element of sex is usual used in research to collected as you mentioned the sample's demographic data, still, would like to know how does it impact the study at all? I mean, for instance if the study is a comparison between both Female/male performance, skills, ability ... etc. But what if the study isn't?

I believe that even if you are conducting a none gender-related study, it would be useful to have at least some basic sociodemographic information about the participants of the study since this information could have an influence on the results even if these variables are not the object of your study; although I think it is always better to ask for sex instead of gender. Gender is a more complex construct , and it would not be completely explained by a dichotomic item or one that does not identify the socioeconomic situation of the participant also.The Intersectionality Perspective is gaining more and more importance as it is underpinned in this two articles I leave here in case they are of your interests.

Stewart, A. J., McDermott, C. (2004). Gender in Psychology. Annual Review of Psychology, 55(1), 519–544. Doi: 10.1146/annurev.psych.55.090902.141537

Scott, J. W. (1986). Gender: A useful category of historical analysis. The American Historical Review, 91(5), 1053-1075.

Male, female, do not know will do. You may need it for some statistical analysis

Yes, Gender is important in research. For instance, you cannot conduct a reproductive research on male subjects if your conceptual framework is birth control. The research runs into problems as soon as you start with this notion.

However, since you question is specifically about non gender related research, then I will say it is still relevant as it provides a social balance to your research.

Please See "Gender Trouble" by Judith Butler (Apologies if too obvious)

I think it is important to include this as part of the demographic information when describing a sample of participants. This allows other researchers to evaluate the generalizability of you findings, as well as establishing whether your sample is representative or not.

Most teachers, mainly in the Algerian context reject the idea of including the section of personal informations of our informantion. However, we end up needing some reference to gender Significance in statistical analysis or data interpretation. I see that it is always necessary to refer to gender.

information / sorry for the typing mistake