Detailed Instructions: In this task, you are given a sentence in Persian, and your task is to translate it into English.
Q: پژوهشگران هم عامل اقتصادی و هم غیر اقتصادی خوشحالی را در نظر گرفته‌اند که هر دوی این عوامل دلایل اصلی مهاجرت را پدید می‌آورند: درآمد کلی و قیاسی، خصوصیات دموگرافیک و اجتماعی، توسعه اجتماعی، رابطه با دیگران و خصوصیات محل زندگی فرد، به علاوه متغیرهایی نظیر مسافت یا مرزهای مشترک و زبان.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The researchers took into account both economic and non-economic factors of happiness, which overlap with what can be considered the determining factors of migration: absolute and relative income, demographic and social characteristics, social development, relationships with others and characteristics of the place where one lives, as well as variables like distance or a common border and language.