Error analysis is considered as an invaluable pedagogical tool in teaching English as a foreign/second language (EFL/ESL). Despite abundant research, there are still lacunae in studies investigating the written grammatical errors among monolingual and bilingual male and female Persian and Turkmen EFL learners. To fill the gap, 158 Persian and Turkmen EFL learners from Golestan Province wrote two descriptive scripts that were examined for their most recurrent written grammatical errors. The errors were then analyzed and compared based on the framework of the study. Statistical analyses indicated significant relationships between Persian and Turkmens’ written grammatical errors and their gender. The frequency of monolingual Persians’ errors was significantly lower than that of bilingual Turkmens. These findings might interest EFL teachers, syllabus designers, and materials developers. Moreover, they could be a prerequisite to corrective feedback research while opening doors to further pertinent studies. Manuscript profile

The impetus behind the current study was to get the best use of all possible pathways of the learner’s brain. Multiple-pathway model, one model of brain-based instruction, on which the current study was based, has synergic effect addressing sensory-motor, emotion, reward, attention, memory, language, frontal lobe (executive function), and social pathways of the learner’s brain altogether. To this aim, this quasi-experimental research, with pretest-intervention-posttest design, was carried out. The participants, who were selected through a convenient sampling method, included 30 BA University students studying TEFL at Islamic Azad University, Aliabad Katoul Branch, and 30 BA University students studying TEFL at Islamic Azad University, Gorgan Branch, were placed into two experimental and control groups, respectively. The instrumentation included DASS 21 and Learning Climate Questionnaires (LCQ) which were used as the pretest and posttest prior to and after the 10 session intervention of brain-based instruction for the experimental group. Descriptive and inferential analysis of collected data indicated the significant impact of the instruction on the participants’ stress, anxiety, depression, and perceived supportive learning climate in the experimental group. Manuscript profile