E/C.12/2005/4 page 8 31. Article 15, paragraph 1 (a) and (b), of the Covenant require States parties to recognize the right of everyone to take part in cultural life and to enjoy the benefits of scientific progress. Implementing article 3, in relation to article 15, paragraph 1 (a) and (b), requires, inter alia, overcoming institutional barriers and other obstacles, such as those based on cultural and religious traditions, which prevent women from fully participating in cultural life, science education and scientific research, and directing resources to scientific research relating to the health and economic needs of women on an equal basis with those of men. III. IMPLEMENTATION AT THE NATIONAL LEVEL A. Policies and strategies 32. The most appropriate ways and means of implementing the right under article 3 of the Covenant will vary from one State party to another. Every State party has a margin of discretion in adopting appropriate measures in complying with its primary and immediate obligation to ensure the equal right of men and women to the enjoyment of all their economic, social and cultural rights. Among other things, States parties must, integrate into national plans of action for human rights appropriate strategies to ensure the equal right of men and women to the enjoyment of economic, social and cultural rights. 33. These strategies should be based on the systematic identification of policies, programmes and activities relevant to the situation and context within the State, as derived from the normative content of article 3 of the Covenant and spelled out in relation to the levels and nature of States parties’ obligations referred to in paragraphs 16 to 21 above. The strategies should give particular attention to the elimination of discrimination in the enjoyment of economic, social and cultural rights. 34. States parties should periodically review existing legislation, policies, strategies and programmes in relation to economic, social and cultural rights, and adopt any necessary changes to ensure that they are consonant with their obligations under article 3 of the Covenant. 35. The adoption of temporary special measures may be necessary to accelerate the equal enjoyment by women of all economic, social and cultural rights and to improve the de facto position of women.14 Temporary special measures should be distinguished from permanent policies and strategies undertaken to achieve equality of men and women. 36. States parties are encouraged to adopt temporary special measures to accelerate the achievement of equality between men and women in the enjoyment of the rights under the Covenant. Such measures are not to be considered discriminatory in themselves as they are grounded in the State’s obligation to eliminate disadvantage caused by past and current discriminatory laws, traditions and practices. The nature, duration and application of such measures should be designed with reference to the specific issue and context, and should be adjusted as circumstances require. The results of such measures should be monitored with a view to being discontinued when the objectives for which they are undertaken have been achieved.