"pre-to-post" meaning in English

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      "expansion": "pre-to-post (not comparable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        {
          "ref": "1977, Proceedings of the Annual Conference of the American Academy of Advertising:",
          "text": "This was then plotted against the change or lack of change among respondents on the pre-to-post questionnaire […]",
          "type": "quote"
        },
        {
          "ref": "2006, Rajiv Grover, Marco Vriens, The Handbook of Marketing Research:",
          "text": "The pre-to-post shift in preferences toward the advertised brand is the persuasion measure.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Relating to the change in a potential consumer's attitude to goods or services as a result of seeing or hearing an advertisement for them."
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      "id": "en-pre-to-post-en-adj-cnFKbB6~",
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          "advertising",
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        [
          "change",
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          "potential",
          "potential"
        ],
        [
          "consumer",
          "consumer"
        ],
        [
          "attitude",
          "attitude"
        ],
        [
          "goods",
          "goods"
        ],
        [
          "service",
          "service"
        ],
        [
          "advertisement",
          "advertisement"
        ]
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        "(advertising) Relating to the change in a potential consumer's attitude to goods or services as a result of seeing or hearing an advertisement for them."
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        },
        {
          "ref": "2006, Rajiv Grover, Marco Vriens, The Handbook of Marketing Research:",
          "text": "The pre-to-post shift in preferences toward the advertised brand is the persuasion measure.",
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      ],
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        "Relating to the change in a potential consumer's attitude to goods or services as a result of seeing or hearing an advertisement for them."
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          "consumer",
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          "goods",
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        "(advertising) Relating to the change in a potential consumer's attitude to goods or services as a result of seeing or hearing an advertisement for them."
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