Social networks are a new form of addiction to technology and are beginning to take place in the moroccan society in the last decades, especially among children and adolescents. Furthermore the Nomophobia is a new form of addiction to new generations of mobile phones. Because of the importance of their speed spread and their influence on the person's future and interpersonal relationships, we conducted a study to calculate the degree of Nomophobia in adolescent population. It is through the establishment of a questionnaire for a sample of 541 adolescents including 298 girls and 243 boys of young Moroccans and a test on Nomophobia NMP-Q. The statistical result stated that 69.1% of girls and 63% of boys have Nomophobia in a moderate and severe state, and that the Smartphone is more solicited than the laptop with a negative correlation between school performance and the score of Nomophobia. Thus, poor school performance and mental disorders in adolescents can be explained by taking Nomophobia.

The aim of this research was to investigate the impact of lead nitrate administered in drinking water during 90 days (sub-chronic toxicity), on body weight gain, motor activity, brain lead accumulation and especially on recognition memory of Wistar rats. Two groups of young female Wistar rats were used. Treated rats received 20 mg L(-1) of lead nitrate diluted in drinking water, while control rats received drinking water only, for 3 months. An evolution of body weight, motor activity, object recognition memory and measure of brain lead levels has been evaluated. The body weight was taken weekly, whereas the memory abilities and the motor activity are measured once every fortnight alternatively, by submitting rats to the Open Field (OF) test and to the Novel Object Recognizing (NOR) memory test. The results have shown a non significant effect in gain of body weight. However, a high significance was shown for horizontal activity (p<0.01), long memory term (p<0.01), at the end of testing period and for brain lead levels (p<0.05) between studied groups.

The massive use of social media, especially Facebook, has an impact on student’s neurocognitive performance and mental health in Morocco. The purpose of this study is to show the impact of the Facebook addiction, especially with Smartphone on school performance and mental health. On the methodological part a questionnaire was used beside the Bergan Facebook Addiction Scale Test (BFAS) which has been validated in the Arab version with Cronbach's Alpha (α = 0.788), and the Nomophobia Questionnaire (NMP-Q) Arabic version, with a general anxiety test, which are distributed to 541 participants in the middle and the high schools of Kenitra city 55.1% of girls and 44.9% of boys have a mean age of 15.238 years, SD = ± 0.06. The results obtained confirmed by a negative correlation in relationship with the first semester general score and Facebook addiction by the BFAS test, and a significant relationship between the increase in Facebook addiction in parallel with the state of anxiety (P <.001) and Nomophobia (P <.000). We have been able to pick up the negative impact of the social media exposure on the performance and mental health of adolescent students. in order to have a solution from this plague in the future.

The aims of this study was to investigate the impact of aluminum nitrate administered in drinking water during 90 days (sub-chronic toxicity), on body weight gain, motor activity, brain aluminum accumulation and especially in recognition memory of wistar rats. Two groups of young female wistar rats were used. Treated rats received (80 mg L(-1)) of aluminum nitrate diluted in drinking water, while control rats received a drinking water only, for 3 months. An evolution of body weight, a motor activity, object recognition memory (NOR) and brain aluminum concentration has been evaluated. The body weight was taken weekly, whereas the memory abilities and the motor activity are measured once every fortnight alternatively, by submitting rats to the open field test and to the novel object recognizing memory test. The results have showed a significant decrease in rats' body weight (p < 0.05). Though, no significance was registered for motor activity. Nevertheless, a high significance is showed for recognition memory compared to control rats (p < 0.01), especially at the end of testing period, even the difference between control and aluminium treated rats in brain aluminum levels was not significant.

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