The vertebrate limb is one of the most relevant experimental models in which to analyse cell-cell signalling during patterning of embryonic fields and organogenesis. Recently, the combination of molecular and genetic studies with experimental manipulation of developing limb buds has significantly advanced our understanding of the complex molecular interactions coordinating limb bud outgrowth an...

The current study was an attempt to investigate the impact of grouping type on the grammatical accuracy of Iranian EFL learners in collaborative writing. Through administering the Michigan Test of English Language Proficiency, 64 female university students available participated in this study and were assigned to two groups--heterogeneous and homogeneous. The treatment process lasted 12 weeks o...

CONTEXT Fractures of proximal fifth metatarsal are one of the most common fractures of the foot. EVIDENCE ACQUISITION A search of PubMed for studies on proximal fifth metatarsal fracture and Jones fracture focusing on the classification and management was performed. The reference list of the retrieved articles was searched for additional related studies. RESULTS The vascular supply and soft...

The current study was intended to investigate the impact of Dynamic Assessment (DA) on promoting reading comprehension ability of Iranian male and female EFL learners, focusing on Guthke's Lerntest approach. In this study, the researcher used DA which unifies instruction with assessment to provide learners with mediation to promote their hidden potential during assessment. In this action resear...

Originating from Vygotsky’s Sociocultural Theory, dynamic assessment (DA) proposes a novel approach to second language acquisition (SLA) research according to which a dialectical relationship is envisaged between instruction and assessment. Although DA has been applied to some areas of SLA, there are areas, such as interlanguage pragmatics (ILP), that have been neglected.  To address the issue,...

The current review article investigates some variables contributing to English language teaching and learning. Three factors of age, motivation and error correction have been of importance in English language curricula in language centres. Some studies have been conducted to investigate various effects of these three components on English language acquisition, those studies, however, may lack d...

Mastering writing has always proved an almost insurmountable barrier to EFL learners. In an attempt to alleviate problems advanced EFL learners have with writing, this study aimed at investigating the effect of scaffolded instruction through writing frames constructed from extended prefabricated lexical bundles. 40 female advanced English students, selected out of a population of 65, were rando...