Dr. Siham Mousa Alhaider is an assistant professor at King Khalid University. She works in English department. She earned her PhD in 2018 from University of Florida in Linguistics. She has an MA in linguistics from the same university. Also, She has a second MA in Computer Assisted Language Learning from King Khalid University. She is interested in theoretical linguistics, sociolinguistics, language studies, linguistic landscape, semiotics, pragmatics and second language acquisition.