For each woman, motherhood is the experience of the unique relationship between a mother and her fetus, which begins during pregnancy (
1). Attachment is centered on the emotional bonds between people (
2). The maternal-fetal attachment theory has been proved a strong relationship between parents and fetus before the child’s birth (
3). With the increase of MFA, mothers are more likely to perform health behaviors during pregnancy, such as stop smoking, alcohol withdrawal, proper nutrition, doing exercise, continuing prenatal care, willingness to know the fetus, and participating in the preparation of childbirth classes; increasing MFA and breastfeeding lead to a satisfactory outcome of pregnancy and improving maternal-fetal health (
4). Maternal-fetal emotions and sensation will be increased mentally and physiologically during pregnancy (
5). Maternal-fetal attachment is closely related to a mother’s psychological health (
1). The mother’s mental health during pregnancy plays an important role in the primary performance of the future child’s mental health (
6).
Several factors have an affect on MFA, for example anxiety, psychiatric diseases, depressive disorders, and schizophrenia (
7). Personality is a basic topic in psychology. Personality disorders can affect all parts of behaviors in people (
8). Five personality traits that are explained by Costa and Mccrea: neuroticism, extraversion, openness to experience, agreeableness, and conscientiousness (
9). Hart & McMahon (
10) suggested that the mother’s mood and the MFA plays an important role in the future child’s health. Mother’s sense and the relationship with the unborn child have a direct connection with the mother’s mental health; thus, identifying the mothers is significantly important in order to be more supported for a safe pregnancy (
11). The mother’s negative feelings during the last eight months of pregnancy will be a useful predictor for the future of the child’s health (
12,
13). In this regard, attachment behaviors training and relaxation methods increase the maternal-fetal attachment. Life satisfaction, social support (
14), some demographic and prenatal variables such as parity, age of mother, and parents’ education influenced MFA during pregnancy (
15). Since studies have shown a significant relationship between mental health and personality traits (
16,
17), awareness of these traits may be a good predictor for MFA. It is necessary to determine MFA behaviors in pregnant women.