For example, higher light intensity was significantly related to skin dryness, eye pain, and malaise. Higher temperature has also been found to correlate with symptoms such as sneezing, skin redness, itchy eyes and headache, while lower relative humidity has been associated with sneezing, skin redness, and pain of the eyes.In 1973, in response to the oil crisis and conservation concerns, ASHRAE Standards 62-73 and 62-81 reduced required ventilation from 10 cubic feet per minute (4.7 L/s) per person to 5 cubic feet per minute (2.4 L/s) per person, but this was found to be a contributing factor to sick building syndrome. As of the 2016 revision, ASHRAE ventilation standards call for 5 to 10 cubic feet per minute of ventilation per occupant (depending on the occupancy type) in addition to ventilation based on the zone floor area delivered to the breathing zone. Psychological factors
One study looked at commercial buildings and their employees, comparing some environmental factors suspected of inducing SBS to a self-reported survey of the occupants, finding that the measured psycho-social circumstances appeared more influential than the tested environmental factors. The authors of that study pointed to the self-reported nature of the observations as a limitation of the research.Research has shown that SBS shares several symptoms common in other conditions thought to be at least partially caused by psychosomatic tendencies. The umbrella term "autoimmune/inflammatory syndrome induced by adjuvants" has been suggested. Other members of the suggested group include silicosis, macrophagic myofascitis, Gulf War syndrome, and post-vaccination phenomena.
A stepmother, stepmum or stepmom is a non-biological female parent married to ones preexisting parent. A stepmother-in-law is a stepmother of ones spouse. Children from her spouses previous unions are known as her stepchildren. Culture
Stepparents (mainly stepmothers) may also face some societal challenges due to the stigma surrounding the "evil stepmother" character. Morello notes that the introduction of the "evil stepmother" character in the past is problematic to stepparents today, as it has created a stigma towards stepmothers. The presence of this stigma can have a negative impact on stepmothers self-esteem. Fiction
In fiction, stepmothers are often portrayed as being wicked and evil. The character of the wicked stepmother features heavily in fairy tales; the most famous examples are Cinderella, Snow White and Hansel and Gretel. Stepdaughters are her most common victim, and then stepdaughter/stepson pairs, but stepsons also are victims as in The Juniper Tree—sometimes, as in East of the Sun and West of the Moon, because he refused to marry his stepsister as she wished, or, indeed, they may make their stepdaughters-in-law their victims, as in The Boys with the Golden Stars. In some fairy tales, such as Giambattista Basiles La Gatta Cennerentola or the Danish Green Knight, the stepmother wins the marriage by ingratiating herself with the stepdaughter, and once she obtains it, becomes cruel.In some fairy tales, the stepdaughters escape by marrying does not free her from her stepmother.