Essays on Head Circumference

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Abstract

In 2013, the fifth edition of the Diagnostic and Statistical Manual of Mental Health Disorders (DSM-5) grouped all subcategories of autism-related disorders in one umbrella, and it is called autism spectrum disorder or ASD. Characterized by repetitive behaviors and communication and social skills deficits, many children from all around the world are afflicted with this disorder. Throughout the years since its discovery, researchers and mental health experts have been interested in completely understanding the nature, etiology, and possible treatments for ASD. Through continuous research efforts and studies, several perspectives have been established to explain the causes of ...

Head size and intelligence: A correlational study

ABSTRACT This study aimed to investigate the relationship between head size and intelligence. A cross-sectional research design was used in the study. Twenty (20) respondents with ages from 12-18 years were purposively selected. Ages, head circumferences and IQ scores were obtained from each of the respondents. One way ANOVA revealed a no significant difference among the respondents in reference to their ages, head sizes and intelligence (p < 0.05). Regression analysis revealed a no significant relationship between the respondents’ head circumferences and IQ scores (R2 = 0.002). Thus, this study concluded that having large head size doesn’t account for one’s ...

Teratogens are genotoxins that can potentially disrupt the genetic makeup of developing cells, resulting in aberrations that can manifest disabling physical and mental abnormalities in a fetus. Teratogens can cross the placenta and reach the fetus, which quashes the popular belief that a fetus is shielded from external harmful influences. This indicates that the placenta is incapable of blocking teratogenic metabolites from reaching the fetus. Teratogenesis can be defined as birth defects or congenital malformations occurring in utero due to exposure to external factors. Such factors could be environmental, chemical or biological in nature. Factors such as the time of exposure, ...